Contents
Features .............................................................. 1
Applications ......................................................... 1
Dimensions (28-pin SOP) .................................... 2
Pin Assignment ................................................... 2
Terminal Functions .............................................. 2
Block Diagram ..................................................... 3
Absolute Maximum Ratings ................................. 3
Recommended Operating Conditions.................. 3
DC Electrical Characteristics ............................... 4
Instructions .......................................................... 5
Application Example (S-1460BF)......................... 5
CMOS 4-bit 1-chip MICROCOMPUTER
S-1460BF
The S-1460BF is a CMOS 4-bit microcomputer, which integrates ROM,
RAM, a timer and I/O ports on a single chip. Since the S-1460BF has a
4K×16-bit ROM, a special terminal for remote control signal output and
key-on wake-up functions, it is ideal for infrared remote controller.
n
Features
Characteristics
•
•
Power supply voltage :
Current consumption
Running
Standby
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
:
:
2.2 to 6.0 V
0.7 mA max. at 1MHz, 3 V operation
0.1
µ
A typ., 2.0
µ
A max.
Operating frequency : 1 MHz
Instruction execution time : 4.0
µ
s at 1 MHz oscillation
ROM : 4K
×
16 bits
RAM : 128
×
4 bits
Port : 8-bit input, 8-bit output, 4-bit I/O
Remote control signal output
Standby counter
Timer / Counter : 10-bit counter, 8-bit timer
Watchdog timer
Key-on wake-up
Interrupt function: Internal (two)
Oscillation circuit : Ceramic oscillator is built in
Standby status : Stops oscillation, holds internal status
Internal low-voltage detector
Instruction: 35 basic instruction sets (166 if addressing modes are included)
16-level subroutine nesting
28-pin SOP
For software evaluation, use the S-14P60AF
Hardware functions
Software
Package
OTP version
n
Applications
•
•
Remote controller
Other small-sized control equipment
*
Use S-1460CF when the operation voltage is 3 V.
Seiko Instruments Inc.
1
CMOS 4-bit 1-chip MICROCOMPUTER
S-1460BF
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
Pin Assignment
28-pin SOP
Top view
P
32
P
33
P
40
P
41
P
42
P
43
NC
RMO
TEST
V
CC
CL1
CL2
V
SS
RESET
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
P
31
P
30
P
23
P
22
P
21
P
20
P
13
P
12
P
11
P
10
P
03
P
02
P
01
P
00
Terminal Functions
Name
V
CC
V
SS
CL1
CL2
RESET
TEST
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
Input
Output
Input
Input
Output
Functions
Positive power supply
GND potential terminal
Oscillation circuit input terminal
Oscillation circuit output terminal
Reset input terminal (pull-up resistor is built in)
Test input terminal (pull-up resistor is built in)
Remote control signal output terminal
I/O ports, selectable in bit unit.
I/O
Built-in pull-up resistor and Nch opendrain output are available in
mask option.
Input ports, also used as sense input of key matrix.
Input Standby status is released by inputting low level in standby status.
Pull-up resistor is built in.
Output Output ports, also used as scan output of key matrix.
Nch opendrain output is also available in mask option.
2
Seiko Instruments Inc.
CMOS 4-bit 1-chip MICROCOMPUTER
S-1460BF
n
Block Diagram
The S-1460BF blocks connect with a 4-bit data bus(DB), 4-bit address bus(AB), 4-bit RAM address bus(RA) and 12-bit
operation bus(OB).
Timer
Oscillation control
Counter
P
10
to P
13
P
20
to P
23
P
30
to P
33
P
40
to P
43
Key sense
port
key scan
port
Program
counter
Interrupt
vector
table
Interrupt
control
RMO
RMO
buffer
ROM
Port 0
buffer
Instruction
decoder
ALU
SYSA
SYSB
ACCA
ACCB
RA
P
00
to P
03
DB
OB
AB
System
reset
Watchdog
timer
Osc. control
Page
register
RAM
Stack
Stack
pointer
Standby
control
System clock
generation circuit
System
clock
V
CC
V
SS
RESET
CL1 CL2
n
Absolute Maximum Ratings
Parameter
Storage temperature
Operating temperature
Power supply voltage
Input voltage
Output voltage
Power dissipation
Symbol
T
stg
T
opr
V
CC
V
IN
V
OUT
P
D
Conditions
Ratings
-40 to +125
-10 to +70
-0.3 to +7.0
V
SS
-0.3 to V
CC
+0.3
V
SS
to V
CC
300
Unit
°C
°C
V
V
V
mW
Ta=25°C
Ta=25°C
Ta=25°C
Ta=25°C
n
Recommended Operating Conditions
(Ta=-10
°C
to +70
°C)
Parameter
Power supply
voltage
Input voltage
System clock
frequency
Symbol
V
CC
V
IN
f
OSC
V
CC
=2.2 to 6.0 V
Conditions
f
OSC
=1 MHz
Min.
2.2
0
0.2
Typ.
Max.
6.0
V
CC
1.0
Unit
V
V
MHz
Seiko Instruments Inc.
3
CMOS 4-bit 1-chip MICROCOMPUTER
S-1460BF
n
DC Electrical Characteristics
•
V
CC
=3 V
(Ta=-10
°C
to +70
°C)
Parameter
Operating current consumption
Standby current consumption
Standby current consumption
High level input voltage
Low level input voltage
High level input leakage current
Low level input leakage current
High level input current
Low level input current 1
Low level input current 2
Low level input current 3
High level output current 1
High level output current 2
Low level output current 1
Low level output current 2
Schmitt hysteresis width
Symbol Conditions(applicable terminals)
Min.
I
CCO
f
OSC
=1 MHz, no load
OFF mode (When low voltage
I
CCS
detection is used)
OFF mode (When low voltage
I
CCS
detection is not used)
V
IH
0.8×V
CC
V
IL
All input pins*
I
LH
V
IN
=V
CC
Without pull-up resistor
I
LL
-1
P
00
to P
03
, V
IN
=V
SS
I
IH
RESET, V
IN
=V
CC
-0.3V
-9
With pull-up resistor, P
00
to P
03
,
I
IL1
-90
P
10
to P
13
, P
20
to P
23
, V
IN
=V
SS
I
IL2
RESET, V
IN
=V
SS
-6
I
IL3
TEST, V
IN
=V
SS
-30
I
OH1
RMO, V
OUT
=2.1 V
P
00
to P
03
, P
30
to P
33
, P
40
to P
43
,
I
OH2
V
OUT
=2.6 V
I
OL1
RMO, V
OUT
=0.4 V
250
P
00
to P
03
, P
30
to P
33
, P
40
to P
43
,
I
OL2
1.0
V
OUT
=0.4 V
V
WD
Typ.
0.25
0.5
0.1
-30
-2
-10
1.0
Max.
0.7
2.0
2.0
0.2×V
CC
1
-0.9
-10
-0.6
-3
-5.0
-100
Unit
mA
µA
µA
V
V
µA
µA
µA
µA
µA
µA
mA
µA
µA
mA
V
* TEST, RESET, P
00
to P
03
, P
10
to P
13
, P
20
to P
23
•
V
CC
=5 V
(Ta=-10
°C
to +70
°C)
Parameter
Operating current consumption
Standby current consumption
High level input voltage
Low level input voltage
High level input leakage current
Low level input leakage current
High level input current
Low level input current 1
Low level input current 2
Low level input current 3
High level output current 1
High level output current 2
Low level output current 1
Low level output current 2
Schmitt hysteresis width
Symbol Conditions(applicable terminals)
Min.
I
CCO
f
OSC
=1 MHz, no load
I
CCS
OFF mode
V
IH
0.8×V
CC
V
IL
All input pins*
I
LH
V
IN
=V
CC
Without pull-up resistor
I
LL
-1
P
00
to P
03
, V
IN
=V
SS
I
IH
RESET, V
IN
=V
CC
-0.3V
-15
With pull-up resistor, P
00
to P
03
,
I
IL1
-230
P
10
to P
13
, P
20
to P
23
, V
IN
=V
SS
I
IL2
RESET, V
IN
=V
SS
-15
I
IL3
TEST, V
IN
=V
SS
-75
I
OH1
RMO, V
OUT
=4.1 V
P
00
to P
03
, P
30
to P
33
, P
40
to P
43
,
I
OH2
V
OUT
=4.6 V
I
OL1
RMO, V
OUT
=0.4 V
450
P
00
to P
03
, P
30
to P
33
, P
40
to P
43
,
I
OL2
1.5
V
OUT
=0.4 V
V
WD
Typ.
0.6
0.1
-90
-6
-30
2.2
Max.
1.2
5.0
0.2×V
CC
1
-1.5
-30
-2.4
-12
-7
-250
Unit
mA
µA
V
V
µA
µA
µA
µA
µA
µA
mA
µA
µA
mA
V
* TEST, RESET, P
00
to P
03
, P
10
to P
13
, P
20
to P
23
4
Seiko Instruments Inc.
LED专区
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