47L04/47C04/47L16/47C16
4K/16K I
2
C Serial EERAM
Device Selection Table
Part Number
47L04
47C04
47L16
47C16
Density (bits)
4K
4K
16K
16K
V
CC
Range
2.7-3.6V
4.5-5.5V
2.7-3.6V
4.5-5.5V
Max. Clock
Frequency
1 MHz
1 MHz
1 MHz
1 MHz
Temperature
Ranges
I, E
I, E
I, E
I, E
Packages
P, SN, ST
P, SN, ST
P, SN, ST
P, SN, ST
Features
• 4 Kbit/16 Kbit SRAM with EEPROM Backup:
- Internally organized as 512 x 8 bits (47X04)
or 2,048 x 8 bits (47X16)
- Automatic Store to EEPROM array upon
power-down (using optional external
capacitor)
- Automatic Recall to SRAM array upon
power-up
- Hardware Store pin for manual Store
operations
- Software commands for initiating Store and
Recall operations
- Store time 8 ms maximum (47X04) or
25 ms maximum (47X16)
• Nonvolatile External Event Detect Flag
• High Reliability:
- Infinite read and write cycles to SRAM
- More than one million store cycles to
EEPROM
- Data retention: >200 years
- ESD protection: >4,000V
• High-Speed I
2
C Interface:
- Industry standard 100 kHz, 400 kHz and
1 MHz
- Zero cycle delay reads and writes
- Schmitt Trigger inputs for noise suppression
- Cascadable up to four devices
• Write Protection:
- Software write protection from 1/64 of SRAM
array to whole array
• Low-Power CMOS Technology:
- 200 µA active current typical
- 40 µA standby current (maximum)
• 8-Lead PDIP, SOIC, and TSSOP Packages
• Available Temperature Ranges:
- Industrial (I):
-40°C to +85°C
- Automotive (E):
-40°C to +125°C
Description
The
Microchip
Technology
Inc.
47L04/47C04/47L16/47C16 (47XXX) is a 4/16 Kbit
SRAM with EEPROM backup. The device is organized
as 512 x 8 bits or 2,048 x 8 bits of memory, and
utilizes the I
2
C serial interface. The 47XXX provides
infinite read and write cycles to the SRAM while
EEPROM cells provide high-endurance nonvolatile
storage of data. With an external capacitor, SRAM
data is automatically transferred to the EEPROM upon
loss of power. Data can also be transferred manually
by using either the Hardware Store pin or software
control. Upon power-up, the EEPROM data is
automatically recalled to the SRAM. Recall can also
be initiated through software control.
The 47XXX is available in the 8-lead PDIP, SOIC, and
TSSOP packages.
Block Diagram
V
CC
V
CAP
Power
Control
Block
SDA
SCL
A2, A1
I
2
C Control Logic
Slave Address
Decoder
Status Register
EEPROM
512 x 8
2K x 8
HS
Memory Address
and Data Control
Logic
SRAM
512 x 8
2K x 8
STORE
RECALL
2015-2016 Microchip Technology Inc.
DS20005371C-page 1
47L04/47C04/47L16/47C16
1.0
1.1
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
(†)
V
CC
.............................................................................................................................................................................6.5V
A1, A2, SDA, SCL, HS pins w.r.t. V
SS
.......................................................................................................... -0.6V to 6.5V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature under bias.............................................................................................................-40°C to +125°C
ESD protection on all pins........................................................................................................................................
≥4
kV
† NOTICE:
Stresses 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 those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an
extended period of time may affect device reliability.
TABLE 1-1:
DC CHARACTERISTICS
47LXX:
47CXX:
Industrial (I):
Automotive (E):
Characteristic
High-Level Input Voltage
Low-Level Input Voltage
Low-Level Output Voltage
Min.
0.7V
CC
-0.3
—
Typ.
—
—
—
—
V
CC
= 2.7V to 3.6V
V
CC
= 4.5V to 5.5V
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
Max.
V
CC
+1
0.3V
CC
0.4
—
Units
V
V
V
V
I
OL
= 3.0 mA
Note 1
Conditions
DC CHARACTERISTICS
Param.
No.
D1
D2
D3
D4
Symbol
V
IH
V
IL
V
OL
V
HYS
Hysteresis of Schmitt
0.05V
CC
Trigger Inputs (SDA, SCL
pins)
Input Leakage Current
(SDA, SCL pins)
Output Leakage Current
(SDA pin)
Input Resistance to V
SS
(A1, A2, HS pins)
Internal Capacitance
(all inputs and outputs)
Operating Current
Recall Current (Note
2)
Manual Store Current
(Note
2)
—
—
50
750
—
—
—
—
—
—
—
—
—
D5
D6
D7
D8
D9
D10
D11
D12
I
LI
I
LO
R
IN
C
INT
I
CC
Active
I
CC
Recall
I
CC
Store
—
—
—
—
—
200
150
—
300
—
—
400
300
±1
±1
—
—
7
400
300
700
500
2000
1000
—
—
µA
µA
kΩ
kΩ
pF
µA
µA
µA
µA
µA
µA
µA
µA
V
IN
= V
SS
or V
CC
V
OUT
= V
SS
or V
CC
V
IN
= V
IL
(max.)
V
IN
= V
IH
(min.)
T
A
= +25°C, F
REQ
= 1 MHz,
V
CC
= 5.5V (Note
1)
V
CC
= 5.5V, F
CLK
= 1 MHz
V
CC
= 3.6V, F
CLK
= 1 MH
Z
V
CC
= 5.5V
V
CC
= 3.6V
V
CC
= 5.5V
V
CC
= 3.6V
V
CC
, V
CAP
= V
TRIP
(min.)
47CXX
V
CC
, V
CAP
= V
TRIP
(min.)
47LXX
I
CC
Auto-Store Current
Auto-Store (Notes
1, 2
and
3)
Note 1:
This parameter is periodically sampled and not 100% tested.
2:
Store and Recall currents are specified as an average current across the entire operation.
3:
C
VCAP
required when Auto-Store is enabled (ASE =
1).
2015-2016 Microchip Technology Inc.
DS20005371C-page 3
47L04/47C04/47L16/47C16
TABLE 1-2:
AC CHARACTERISTICS
47LXX:
47CXX:
Industrial (I):
Automotive (E):
Characteristic
Clock Frequency
Clock High Time
Clock Low Time
SDA and SCL Input Rise
Time
SDA and SCL Input Fall
Time
Start Condition Hold Time
Start Condition Setup
Time
Data Input Hold Time
Data Input Setup Time
Stop Condition Setup
Time
Output Valid from Clock
Bus Free Time: Bus time
must be free before a new
transmission can start
Input Filter Spike
Suppression (SDA, SCL
and HS pins)
Hardware Store Pulse
Width
Recall Operation Duration
Store Operation Duration
STATUS Register Write
Cycle Time
V
CC
Rise Rate
V
CC
Fall Rate
EEPROM Endurance
Min.
—
500
500
—
—
250
250
0
100
250
—
500
V
CC
= 2.7V to 3.6V
V
CC
= 4.5V to 5.5V
T
AMB
= -40°C to +85°C
T
AMB
= -40°C to +125°C
Units
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1
Note 1
Conditions
AC CHARACTERISTICS
Param.
No.
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
F
CLK
T
HIGH
T
LOW
T
R
T
F
T
HD
:
STA
T
SU
:
STA
T
HD
:
DAT
T
SU
:
DAT
T
SU
:
STO
T
AA
T
BUF
Max.
1000
—
—
300
300
—
—
—
—
—
400
—
13
T
SP
—
50
ns
Note 1
14
15
16
17
18
19
20
T
HSPW
T
RECALL
T
STORE
T
WC
T
VRISE
Tv
FALL
150
—
—
—
—
—
70
70
1,000,000
—
5
2
25
8
1
—
—
—
ns
ms
ms
ms
ms
ms
µs/V
µs/V
Store
cycles
Note 1
Note 1
+25°C, V
CC
= 5.5V
(Notes
1
and
2)
47X16
47X04
47X16
47X04
Note 1:
This parameter is not tested but ensured by characterization.
2:
For endurance estimates in a specific application, please consult the Total Endurance Model which can
be obtained on Microchip’s website at www.microchip.com.
2015-2016 Microchip Technology Inc.
DS20005371C-page 5
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