Pins designated as "NC" are typically unbonded pins. However some of them are bonded for special testing purposes. Hence if a signal is applied to these pins, care
should be taken that the voltage applied on these pins does not exceed the V
CC
applied to the device. This will ensure proper operation.
Ordering Information
FM
93
C
XX
A
LZ
E
XXX
Package
Letter
N
M8
MT8
None
V
E
Blank
L
LZ
A
Density
66
C
CS
Interface
93
Description
8-pin DIP
8-pin SO
8-pin TSSOP
0 to 70°C
-40 to +125°C
-40 to +85°C
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V and
<1µA Standby Current
x8 or x16 configuration
4096 bits
CMOS
Data protect and sequential
read
MICROWIRE
Temp. Range
Voltage Operating Range
Fairchild Memory Prefix
2
FM93C66A Rev. B.1
www.fairchildsemi.com
FM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Absolute Maximum Ratings
(Note 1)
Ambient Storage Temperature
All Input or Output Voltages
with Respect to Ground
Lead Temperature
(Soldering, 10 sec.)
ESD rating
-65°C to +150°C
+6.5V to -0.3V
Operating Conditions
Ambient Operating Temperature
FM93C66A
FM93C66AE
FM93C66AV
Power Supply (V
CC
)
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
4.5V to 5.5V
+300°C
2000V
DC and AC Electrical Characteristics
V
CC
= 4.5V to 5.5V unless otherwise specified
Symbol
I
CCA
I
CCS
I
IL
I
OL
I
ILO
V
IL
V
IH
V
OL1
V
OH1
V
OL2
V
OH2
f
SK
t
SKH
t
SKL
t
CS
t
CSS
t
DH
t
DIS
t
CSH
t
DIH
t
PD
t
SV
t
DF
t
WP
Parameter
Operating Current
Standby Current
Input Leakage
Output Leakage
Input Leakage ORG Pin
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
SK Clock Frequency
SK High Time
SK Low Time
Minimum CS Low Time
CS Setup Time
DO Hold Time
DI Setup Time
CS Hold Time
DI Hold Time
Output Delay
CS to Status Valid
CS to DO in Hi-Z
Write Cycle Time
Conditions
CS = V
IH
, SK=1.0 MHz
CS = V
IL
V
IN
= 0V to V
CC
(Note 2)
ORG tied to V
CC
ORG tied to V
SS
(Note 3)
Min
Max
1
50
±-1
Units
mA
µA
µA
µA
V
V
V
MHz
ns
ns
ns
ns
ns
ns
ns
ns
-1
-2.5
-0.1
2
1
2.5
0.8
V
CC
+1
0.4
I
OL
= 2.1 mA
I
OH
= -400
µA
I
OL
= 10
µA
I
OH
= -10
µA
(Note 4)
0°C to +70°C
-40°C to +125°C
2.4
0.2
V
CC
- 0.2
1
250
300
250
(Note 5)
250
50
70
100
0
20
500
500
ns
ns
ns
ms
CS = V
IL
100
10
3
FM93C66A Rev. B.1
www.fairchildsemi.com
FM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Absolute Maximum Ratings
(Note 1)
Ambient Storage Temperature
All Input or Output Voltages
with Respect to Ground
Lead Temperature
(Soldering, 10 sec.)
ESD rating
-65°C to +150°C
+6.5V to -0.3V
Operating Conditions
Ambient Operating Temperature
FM93C66AL/LZ
FM93C66ALE/LZE
FM93C66ALV/LZV
Power Supply (V
CC
)
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
2.7V to 5.5V
+300°C
2000V
DC and AC Electrical Characteristics
V
CC
= 2.7V to 4.5V unless otherwise specified. Refer to
page 3 for V
CC
= 4.5V to 5.5V.
Symbol
I
CCA
I
CCS
Parameter
Operating Current
Standby Current
L
LZ (2.7V to 4.5V)
Input Leakage
Output Leakage
Input Leakage ORG Pin
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
SK Clock Frequency
SK High Time
SK Low Time
Minimum CS Low Time
CS Setup Time
DO Hold Time
DI Setup Time
CS Hold Time
DI Hold Time
Output Delay
CS to Status Valid
CS to DO in Hi-Z
Write Cycle Time
Conditions
CS = V
IH
, SK=250 KHz
CS = V
IL
Min
Max
1
10
1
Units
mA
µA
µA
µA
µA
V
V
KHz
µs
µs
µs
µs
ns
µs
ns
µs
µs
µs
µs
ms
I
IL
I
OL
I
ILO
V
IL
V
IH
V
OL
V
OH
f
SK
t
SKH
t
SKL
t
CS
t
CSS
t
DH
t
DIS
t
CSH
t
DIH
t
PD
t
SV
t
DF
t
WP
V
IN
= 0V to V
CC
(Note 2)
ORG tied to V
CC
ORG tied to V
SS
(Note 3)
-1
-2.5
-0.1
0.8V
CC
I
OL
= 10µA
I
OH
= -10µA
(Note 4)
0.9V
CC
0
1
1
1
0.2
70
0.4
0
0.4
±1
1
2.5
0.15V
CC
V
CC
+1
0.1V
CC
250
(Note 5)
2
1
CS = V
IL
0.4
15
Capacitance
T
A
= 25°C, f = 1 MHz or
250 KHz (Note 6)
Symbol
C
OUT
C
IN
Note 1:
Stress above those listed under “Absolute Maximum Ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of the specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect device reliability.
Note 2:
Note 3:
Typical leakage values are in the 20nA range.
ORG pin may draw >1µA when in x8 mode due to the internal pull-up transistor.
Test
Output Capacitance
Input Capacitance
Typ
Max
5
5
Units
pF
pF
Note 4:
The shortest allowable SK clock period = 1/f
SK
(as shown under the f
SK
parameter). Maximum
SK clock speed (minimum SK period) is determined by the interaction of several AC parameters stated
in the datasheet. Within this SK period, both t
SKH
and t
SKL
limits must be observed. Therefore, it is not
allowable to set 1/f
SK
= t
SKHminimum
+ t
SKLminimum
for shorter SK cycle time operation.
Note 5:
CS (Chip Select) must be brought low (to V
IL
) for an interval of t
CS
in order to reset all internal
device registers (device reset) prior to beginning another opcode cycle. (This is shown in the opcode
diagram on the following page.)
Note 6:
This parameter is periodically sampled and not 100% tested.
AC Test Conditions
V
CC
Range
(Extended Voltage Levels)
V
IL
/V
IH
Input Levels
0.3V/1.8V
0.4V/2.4V
V
IL
/V
IH
Timing Level
1.0V
1.0V/2.0V
V
OL
/V
OH
Timing Level
0.8V/1.5V
0.4V/2.4V
I
OL
/I
OH
±10µA
2.1mA/-0.4mA
2.7V
≤
V
CC
≤
5.5V
(TTL Levels)
4.5V
≤
V
CC
≤
5.5V
Output Load: 1 TTL Gate (C
L
= 100 pF)
4
FM93C66A Rev. B.1
www.fairchildsemi.com
FM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Pin Description
Chip Select (CS)
This is an active high input pin to FM93C66A EEPROM (the device)
and is generated by a master that is controlling the device. A high
level on this pin selects the device and a low level deselects the
device. All serial communications with the device is enabled only
when this pin is held high. However this pin cannot be permanently
tied high, as a rising edge on this signal is required to reset the
internal state-machine to accept a new cycle and a falling edge to
initiate an internal programming after a write cycle. All activity on the
SK, DI and DO pins are ignored while CS is held low.
Refer Table 1 and Table 2 for more details. This pin is internally
pulled-up to V
CC
. Hence leaving this pin unconnected would
default to 16-bit data format.
Microwire Interface
A typical communication on the Microwire bus is made through the
CS, SK, DI and DO signals. To facilitate various operations on the
Memory array, a set of 7 instructions are implemented on
FM93C66A. The format of each instruction is listed under Table 1
(for 16-bit format) and Table 2 (for 8-bit format).
Instruction
Each of the above 7 instructions is explained under individual
instruction descriptions.
Serial Clock (SK)
This is an input pin to the device and is generated by the master that
is controlling the device. This is a clock signal that synchronizes the
communication between a master and the device. All input informa-
tion (DI) to the device is latched on the rising edge of this clock input,
while output data (DO) from the device is driven from the rising edge
of this clock input. This pin is gated by CS signal.
Start bit
This is a 1-bit field and is the first bit that is clocked into the device
when a Microwire cycle starts. This bit has to be “1” for a valid cycle
to begin. Any number of preceding “0” can be clocked into the
device before clocking a “1”.
Serial Input (DI)
This is an input pin to the device and is generated by the master
that is controlling the device. The master transfers Input informa-
tion (Start bit, Opcode bits, Array addresses and Data) serially via
this pin into the device. This Input information is latched on the
rising edge of the SCK. This pin is gated by CS signal.
Opcode
This is a 2-bit field and should immediately follow the start bit.
These two bits (along with 2 MSB of address field) select a
particular instruction to be executed.
Address Field
Depending on the selected organization, this is a 8-bit or 9-bit field
and should immediately follow the Opcode bits. In FM93C66A, all
8 bits (or 9 bits) are used for address decoding during READ,
WRITE and ERASE instructions. During all other instructions, the
MSB 2 bits are used to decode instruction (along with Opcode bits).
Serial Output (DO)
This is an output pin from the device and is used to transfer Output
data via this pin to the controlling master. Output data is serially
shifted out on this pin from the rising edge of the SCK. This pin is
active only when the device is selected.
Organization (ORG)
This is an input pin to the device and is used to select the format
of data (16-bit or 8-bit). If this pin is tied high, 16-bit format is
selected, while if it is tied low, 8-bit format is selected. Depending
on the format selected, FM93C66A requires 8-bit address field (for
16-bit data format) or 9-bit address field (for 8-bit data format).
Data Field
Depending on the selected organization, this is a 16-bit or 8-bit
field and should immediately follow the Address bits. Only the
WRITE and WRALL instructions require this field. MSB bit (D15 or
D7) is clocked first and LSB bit (D0) is clocked last (both during
I recently wrote a program about single-chip adjustable electronic clock control (I am a beginner). When adjusting the parameters, the digital tube display is unstable. I have modified it countless ti...
copy_code ; Code copy start symbolmov r0, #0x0 ; R0 is the data start address (ROM data is stored at address 0)ldr r1, =|Image$$RO$$Base| ; R1 stores the RO output domain running address,; the value i...
[i=s]This post was last edited by Mandy on 2014-12-29 20:27[/i] I have been busy with the "TI First Low Power Design Competition" recently. Since the project uses MPU6050, I found some information on ...
I have used LM3S8962 before, and I have also used the official 8962 development board.
I feel there are several major problems: First, the heating problem is really serious, and it is doubtful whether...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
Instrument stepper motor
The stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he ...[Details]
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
