Contents
Features .............................................................. 1
Applications ......................................................... 1
Dimensions (28-pin SOP) .................................... 1
Pin Assignment ................................................... 2
Terminal Functions .............................................. 2
Block Diagram ..................................................... 3
Absolute Maximum Ratings ................................. 3
Recommended Operating Conditions.................. 3
DC Electrical Characteristics ............................... 4
Instructions .......................................................... 6
Application Example (S-1343AF) ......................... 6
CMOS 4-bit
1-chip MICROCOMPUTER
S-1343AF/13L43AF
The S-1343AF/13L43AF 4-bit microcomputer integrates 8-bit
programmable timer, watch dog timer, carry output circuit, etc., on one
chip. As it can be driven by batteries, this microcomputer is ideal for
various compact portable equipment.
In particular, S-13L43AF, which is a low-voltage operation version of S-
1343AF, is designed to be driven by one battery (1.5 V).
n
Feature
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Si gate CMOS process
Low power consumption
Single power supply : 1.8 V min.(for S-1343AF, 500 KHz)
1.2 V min.(for S-13L43AF, 500 KHz)
High-speed operation : 500 KHz max.
ROM: 1024×8 bits
RAM: 32×4 bits
12 input lines and 8 output lines
2 timers: 8-bit programmable timer and delay timer
Watch dog timer
Interrupt function
Standby function (STOP, HALT)
Instruction execution time: 8
µ
SEC /Inst min. (at 500 KHz)
Instructions:79 types (114 including addressing modes)
10-level subroutine nesting
28-pin SOP (terminal distance: 1.27 mm)
n
Applications
•
•
Infrared remote controller
Compact portable equipment, others
n
Dimensions (28-pin SOP)
18.7 (19.0 max.)
28
15
0.5
7.5
9.9±0.3
1
14
0.15
+0.1
−0.05
2.2±0.1
0 min.
1.27
0.4±0.1
2.4 max.
Unit : mm
Figure 1
Seiko Instruments Inc.
1
CMOS 4-bit 1-chip MICROCOMPUTER
S-1343AF/13L43AF
Pin Assingnments
28 pin SOP
Top view
RESET
V
DD
RMO
P
00
P
01
P
02
P
03
P
10
P
11
P
12
P
13
P
43
P
42
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CL
1
CL
2
V
SS
P
20
P
21
P
22
P
23
P
30
P
31
P
32
P
33
P
40
P
41
NC
Figure 2
Terminal Functions
Table 1
Name
V
DD
V
SS
RESET
I/O
Input
Functions
Positive power terminal
GND potential terminal
Reset input terminal (Schmitt trigger input)
Active level can be selected with mask option
•
Active low: with pull-up resistor
•
Active high: with pull-down resistor
Ceramic oscillator connection terminal
CL
1
CL
2
RMO
P
00
to P
03
P
10
to P
13
P
20
to P
23
P
30
to P
33
P
40
to P
43
I/O
Output Carrier output terminal
Output port (Nch open drain output and CMOS output can be selected
Output
with mask option)
Output port (Nch open drain output and CMOS output can be selected
Output
with mask option)
Input Input port (pull-up resistor can be built in with mask option)
Input Input port (pull-up resistor can be built in with mask option)
Input Input port (pull-up resistor can be built in with mask option)
2
Seiko Instruments Inc.
CMOS 4-bit 1-chip MICROCOMPUTER
S-1343AF/13L43AF
n
Block Diagram
S-1343/L43AF is connected by 4-bit data bus (DB), 12-bit address bus (AB), control signals, etc., and controls the
memories (ROM, RAM), registers, I/O ports, logic circuits (ALU), timers, etc.
One machine cycle (a cycle) consists of four system clocks.
Instruction cycles vary from one to six cycles, depending on the type of instruction.
AB
DB
Oscillation
control
Interrupt
vector
table
Timer
P
20
∼P
23
P
30
∼P
33
P
40
∼P
43
P
00
∼P
03
P
10
∼P
13
Key sense
port
Key scan
port
Program
counter
Interrupt
control
ROM
RMO
RMO
Instruction
decoder
ALU
buffer
Control signals
V
DD
V
SS
RESET
RAM
Registers
Watch dog
timer
Reset
Control signals
Oscillation
control
Standby
control
System clock
generation circuit
CL
2
CL
1
Control signals
Figure 3
n
Absolute Maximum Ratings
Table 2
Item
Storage temperature
Operating temperature
Power supply voltage
Input voltage
Output voltage
Power dissipation
Symbol
T
stg
T
opr
V
DD
V
IN
V
OUT
P
d
Ta=25°C
Ta=25°C
Ta=25°C
Ta=25°C
Conditions
Rating
-40 to +125
-10 to +70
S-1343AF : -0.3 to +7.0
S-13L43AF : -0.3 to +4.0
V
SS
-0.3 to V
DD
+0.3
V
SS
to V
DD
300
Unit
°C
°C
V
V
V
V
mW
n
Recommended Operating Conditions
Table 3
Item
Power supply voltage
Input voltage
System clock frequency
Symbol
V
DD
V
IN
f
sys
V
DD
=1.8 to 6.0 V (S-1343AF)
V
DD
=1.2 to 3.6 V (S-13L43AF)
Conditions
System clock: 500 kHz
for S-1343AF
System clock: 500 kHz
for S-13L43AF
Min.
1.8
1.2
0
200
(Ta=-10
°C
to +70
°C)
Typ.
Max.
6.0
3.6
V
DD
500
Unit
V
V
V
KHz
Seiko Instruments Inc.
3
CMOS 4-bit 1-chip MICROCOMPUTER
S-1343AF/13L43AF
n
DC Characteristics
1. S-1343AF (V
DD
=3 V)
Table 4
(Ta=-10°C to +70°C, V
DD
=3.0 V)
Item
Operating current consumption
Standby current consumption
High level input voltage
Low level input voltage
High level input leakage current
Low level input leakage current
Symbol
I
CCO
I
CCS
V
IH
V
IL
I
IH
I
IL
Conditions
System clock : 455 KHz
At STOP mode
Min.
Typ.
0.12
0.4
Max.
0.25
1
Unit
mA
µA
V
V
µA
µA
µA
µA
µA
µA
µA
mA
µA
µA
mA
V
0.8×V
DD
1
0.2×V
DD
High Ievel input current
I
IH
Low Ievel input current 1
I
IL1
Low Ievel input current 2
I
IL2
High level output current 1
High level output current 2
Low level output current 1
Low level output current 2
Schmitt hysteresis width
I
OH1
I
OH2
I
OL1
I
OL2
V
WD
All input terminals
V
IN
=V
DD
Without pull-up resistor,
V
IN
=V
SS
RESET terminal:
When active high
V
IN
=V
DD
RESET terminal:
When active low
V
IN
=V
DD
-0.3 V
With pull-up resistor,
V
IN
=V
SS
RESET terminal:
When active high
V
IN
=V
SS
+0.3 V
RESET terminal:
When active low
V
IN
=V
SS
RMO terminal, V
OUT
=2.1 V
Output port, V
OUT
=2.6 V
RMO terminal, V
OUT
=0.4 V
Output port, V
OUT
=0.4 V
-1
0.6
-9
-90
0.9
-6
2
6
-0.9
-10
9
-0.6
-5.0
-100
-30
-2
250
1.0
0.7
2. S-1343AF (V
DD
=5 V)
Table 5
(Ta=-10°C to +70°C, V
DD
=5.0 V)
Item
Operating current consumption
Standby current consumption
High level input voltage
Low level input voltage
High level input leakage current
Low level input leakage current
Symbol
I
CCO
I
CCS
V
IH
V
IL
I
IH
I
IL
Conditions
System clock : 455 KHz
At STOP mode
Min.
Typ.
0.4
0.5
Max.
0.7
5
Unit
mA
µA
V
V
µA
µA
µA
µA
µA
µA
µA
mA
µA
µA
mA
V
0.8×V
DD
1
0.2×V
DD
High Ievel input current
I
IH
Low Ievel input current 1
I
IL1
Low Ievel input current 2
I
IL2
High level output current 1
High level output current 2
Low level output current 1
Low level output current 2
Schmitt hysteresis width
I
OH1
I
OH2
I
OL1
I
OL2
V
WD
All input terminals
V
IN
=V
DD
Without pull-up resistor,
V
IN
=V
SS
RESET terminal:
When active high
V
IN
=V
DD
RESET terminal:
When active low
V
IN
=V
DD
-0.3 V
With pull-up resistor,
V
IN
=V
SS
RESET terminal:
When active high
V
IN
=V
SS
+0.3 V
RESET terminal:
When active low
V
IN
=V
SS
RMO terminal, V
OUT
=4.1 V
Output port, V
OUT
=4.6 V
RMO terminal, V
OUT
=0.4 V
Output port, V
OUT
=0.4 V
-1
2
-13.5
-270
1.5
-20
7
20
-1.5
-30
15
-2
-8.0
-250
-90
-6.5
500
2.0
1.6
4
Seiko Instruments Inc.
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