P
RODUCT
S
PECIFICATION
1
Z08615
NMOS 8-B
IT
Z8
®
MCU
K
EYBOARD
C
ONTROLLER
FEATURES
Device
Z08615
ROM
(KB)
4
RAM*
(Bytes)
124
I/O
Lines
32
Speed
(MHz)
5
s
1
Two Programmable 8-Bit Counter/Timers,
Each with 6-Bit Programmable Prescaler
Six Vectored, Priority Interrupts from
Six Different Sources
On-Chip Oscillator that Accepts an RC (Capacitor On-
Board), Crystal, Ceramic Resonator, or External Clock
Drive (Mask Options)
Clock Frequency:
RC = 8 to 10 MHz
Crystal = 4 to 5 MHz
Low EMI Emission
s
Note:
*General-Purpose
s
s
Low Power Consumption - 750 mW
Digital Inputs NMOS Levels with
Internal Pull-Up Resistors
Four Direct Connect LED Drive Ports
Hardware Watch-Dog Timer (WDT)
s
s
s
s
s
GENERAL DESCRIPTION
The Z08615 Keyboard Controller is a member of the Z8
®
single-chip microcontroller family with 4 Kbytes of ROM.
The device is housed in a 40-pin DIP and 44-pin PLCC
package, and is manufactured in NMOS technology. The
Z08615 microcontroller offers fast execution, efficient use
of memory, sophisticated interrupt, input/output bit-manip-
ulation capabilities, and easy hardware/software system
expansion along with low cost and low power consump-
tion.
The Z08615 architecture is characterized by a flexible I/O
scheme, an efficient register, I/O, and a number of ancillary
features that are useful in many industrial and advanced
scientific applications.
For applications which demand powerful I/O capabilities,
the Z08615 provides 32 pins dedicated to input and output.
These lines are grouped into four ports, each port consists
of 8 lines, and are configurable under software control to
provide timing, status signals, and serial or parallel I/O
ports.
The Z08615 offers low EMI emission which is achieved by
means of several modifications in the output drivers and
clock circuitry of the device.
There are two basic address spaces which are available to
support this wide range of configurations: Program Memo-
ry and 124 General-Purpose Registers.
The Z08615 offers two on-chip counter/timers with a large
number of user-selectable modes. This unburdens the pro-
gram from coping with real-time problems such as count-
ing/timing (Figure 1).
Power connections follow conventional descriptions be-
low:
Connection
Power
Ground
Circuit
V
CC
GND
Device
V
DD
V
SS
DS97KEY2100
A1-1
Z08615
NMOS 8-Bit Z8
®
MCU Keyboard Controller
Zilog
GENERAL DESCRIPTION
(Continued)
WDTOUT
DS97KEY2100
Output
Input
Vcc
GND
Port 3
Machine Timing
& Instruction Control
WDT
ALU
POR
Counter/
Timers (2)
Flags
Program
Memory
Register
Pointer
Interrupt
Control
Register File
124 x 8-Bit
Program
Counter
Port 2
Port 0
Port 1
4
I/O
(Bit Programmable)
4
8
I/O
Output Open-Drain
(Byte Programmable)
I/O
Output Open-Drain
(Nibble Programmable)
Figure 1. Z08615 Functional Block Diagram
A1-2
RESET
XTAL
XTAL2
Zilog
NMOS 8-Bit
Z8
®
Z08615
MCU Keyboard Controller
PIN DESCRIPTIONS
VCC
XT
AL2
XT
AL1
P37
P30
RESET
*GND
*N/C
WDTOUT
P35
GND
P32
P00
P01
P02
P03
P04
P05
P06
P07
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Z08615
DIP
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
P36
P31
P27
P26
P25
P24
P23
P22
P21
P20
P33
P34
P17
P16
P15
P14
P13
P12
P11
P10
1
Note:
* Pin 8 is connected to the chip, although used only for testing.
This pin
must
float. Pin 7 is a test pin and
must
be grounded.
Figure 2. Z08615 40-Pin DIP Pin Configuration
Table 1. Z08615 40-Pin DIP Identification
Pin #
1
2
3
4
5
6
*7
*8
9
Symbol
V
CC
XTAL2
XTAL1
P37
P30
RESET
GND
N/C
WDTOUT
Function
Power Supply
Crystal Oscillator Clock
Crystal Oscillator Clock
Port 3, Pin 7
Port 3, Pin 0
Reset
Ground
Not Connected
Watch-Dog Timer
Direction
Input
Output
Input
Output
Input
Input
Pin #
10
11
12
13-20
21-28
29
30
31-38
39
40
Table 1. Z08615 40-Pin DIP Identification
Symbol
P35
GND
P32
P07-P00
P17-P10
P34
P33
P27-P20
P31
P36
Function
Direction
Output
Port 3, Pin 5
Output
Ground
Input
Port 3, Pin 2
Input
Port 0, Pins 0,1,2,3,4,5,6,7In/Output
Port 1, Pins 0,1,2,3,4,5,6,7In/Output
Port 3, Pin 4
Output
Port 3, Pin 3
Input
Port 2, Pins 0,1,2,3,4,5,6,7In/Output
Port 3, Pin 1
Input
Port 3, Pin 6
Output
DS97KEY2100
A1-3
Z08615
NMOS 8-Bit Z8
®
MCU Keyboard Controller
Zilog
PIN DESCRIPTIONS
(Continued)
6
/RESET
*GND
*N/C
/WDTOUT
P35
GND
P32
P00
P01
P02
N/C
7
8
9
10
1
1
12
13
14
15
16
17
5
4
3
2
1 44 43 42 41 40
39
38
37
36
35
N/C
P24
P23
P22
P21
P20
P33
P34
P17
P16
P15
Z8615
PLCC
34
33
32
31
30
29
18 19 20 21 22 23 24 25 26 27 28
Note:
* Pin 9 is connected to the chip, although used only for testing.
This pin
must
float. Pin 8 is a test pin and
must
be grounded.
Figure 3. Z08615 44-Pin PLCC Pin Configuration
Table 2. Z08615 44-Pin PLCC Pin Identification
Pin #
1
2
3
4
5
6
7
*8
*9
10
11
12
13
14-16
17
18-22
Symbol
V
CC
XTAL2
XTAL1
P37
P30
N/C
RESET
GND
N/C
WDTOUT
P35
GND
P32
P02/P00
N/C
P07-P03
Function
Power Supply
Direction
Input
Table 2. Z08615 44-Pin PLCC Pin Identification
Pin #
23-27
28
29-31
32
33
34-38
39
40-42
43
44
Symbol
P14-P10
N/C
P17-P15
P34
P33
P24-P20
N/C
P27-P25
P31
P36
Function
Direction
Crystal Oscillator Clock Output
Crystal Oscillator Clock Input
Port 3, Pin 7
Output
Port 3, Pin 0
Input
Not Connected
Reset
Input
Ground
Not Connected
Watch-Dog Timer
Output
Port 3, Pin 5
Output
Ground
Input
Port 3, Pin 2
Input
Port 0, Pins 0, 1, 2
In/Output
Not Connected
Port 0, Pins 3, 4, 5, 6, 7 In/Output
Port 1, Pins 0, 1, 2, 3, 4 In/Output
Not Connected
Port 1, Pins 5, 6, 7
In/Output
Port 3, Pin 4
Output
Port 3, Pin 3
Input
Port 2, Pins 0, 1, 2, 3, 4 In/Output
Not Connected
Port 2, Pins 5, 6, 7
In/Output
Port 3, Pin 1
Input
Port 3, Pin 6
Output
A1-4
DS97KEY2100
Zilog
NMOS 8-Bit
Z8
®
Z08615
MCU Keyboard Controller
ABSOLUTE MAXIMUM RATINGS
Sym.
V
DD
T
STG
T
A
Parameter
Supply Voltage*
Storage Temp.
Oper. Ambient Temp.
Min.
–0.3
–65
°
†
Max.
+7
+150
°
†
Units
V
C
C
Stresses greater than those listed under Absolute Maxi-
mum Ratings may cause permanent damage to the de-
vice. This is a stress rating only; operation of the device at
any condition above those indicated in the operational sec-
tions of these specifications is not implied. Exposure to ab-
solute maximum rating conditions for extended periods
may affect device reliability.
1
Note:
*Voltages on all pins with respect to Ground.
†See Ordering Information.
STANDARD TEST CONDITIONS
The characteristics listed below apply for standard test
conditions as noted. All voltages are referenced to
Ground. Positive current flows into the referenced pin
(Figure 4).
From Output
Under Test
I
150 pF
Figure 4. Test Load Diagram
CAPACITANCE
T
A
= 25
°
C, VCC = GND = 0V, f = 1.0 MHz, unmeasured pins returned to ground.
Parameter
Input Capacitance
Output Capacitance
I/O Capacitance
Min.
0
0
0
Max.
12 pF
12 pF
12 pF
DS97KEY2100
A1-5
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