
DESCRIPTION
The SM5K3/5K4/5K5 are CMOS 4-bit single-chip
microcomputers incorporating 4-bit parallel pro-
cessing function, ROM, RAM, 10-bit A/D converter
and timer/counters.
It provides three kinds of interrupts and 4 levels
subroutine stack. Being fabricated through CMOS
process, the chip requires less power and available
in a small package : best suitable for Low power
controlling, compact equipment like a precision
charger.
FEATURES
ROM capacity : 2 048 x 8 bits
RAM capacity : 128 x 4 bits
Instruction sets : 50
Subroutine nesting : 4 levels
I/O port :
Input
Output
Input/output
8
4
12 (36QFP/32SOP)
11 (30SDIP)
8 (28SOP)
Interrupts :
Internal interrupt
External interrupt
x 1 (timer)
x 2 (2 external interrupt
inputs)
A/D converter :
Resolution
Channels
Timer/counter : 8-bit x 1
Built-in main clock oscillator for system clock
Ceramic/crystal oscillator (SM5K3/5K5)
CR oscillator (SM5K4)
Signal generation for real time clock
(SM5K3/5K5)
Built-in 15 stages divider
(
for real time clock
: SM5K3/5K5)
10 bits
4
Instruction cycle time :
1 μs (MIN.) (2 MHz, at 5 V ± 10%) (SM5K3/5K5)
2 μs (MIN.) (1 MHz, at 2.2 to 5.5 V) (SM5K3/5K5)
1 μs (MIN.) (1.67 MHz ± 20%, at 5 V ± 10%) (SM5K4)
Large current output pins (LED direct drive) :
15mA (TYP.)
x 4
(sink current)
Supply voltages :
2.2 to 5.5 V (SM5K3/5K5)
2.7 to 5.5 V (SM5K4)
Packages :
30-pin SDIP (SDIP030-P-0400)
32-pin SOP (SOP032-P-0525)
36-pin QFP (QFP036-P-1010)
28-pin SOP (SOP028-P-0450) (SM5K3/5K5)
24-pin SSOP (SSOP024-P-0275) (SM5K4)
In case of using crystal oscillator
SM5K3/SM5K4/SM5K5
SM5K3/SM5K4
SM5K5
4-Bit Single-Chip Microcomputers
(Controllers With 10-Bit A/D Converter)
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In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books,
etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.