The followings are some of the features
on the hardware and software :
Fully CMOS static design
8-bit data bus
On chip ROM size : 1K words
Internal RAM size : 32 bytes
(25 general purpose registers, 7 special
registers)
36 single word instructions
14-bit instructions
2-level stacks
Operating voltage : 2.3V ~ 6.0 V
Operating frequency : 0 ~ 20 MHz
The most fast execution time is 200
ns under 20 MHz in all single cycle
instructions except the branch
instructions
Addressing modes include direct,
indirect and relative addressing modes
Power-on Reset (POR)
only available
while PED is Disable
Power edge-detector Reset (PED)
Sleep Mode for power saving
8-bit real time clock/counter(RTCC)
with 8-bit programmable prescaler
4 types of oscillator can be selected
by programming option (Internal
Capacitor about 10p ):
RCÑLow cost RC oscillator
LFXTÑLow frequency crystal
oscillator
XTALÑStandard crystal oscillator
HFXTÑHigh frequency crystal
oscillator
4 oscillator start-up time can be
selected by programming option:
150 μs, 20 ms, 40 ms, 80 ms
On-chip RC oscillator based
Watchdog Timer(WDT) can be operated
freely
12 I/O pins with their own independent
direction control