FEATURES
 Memory configuration  Three interrupt sources
OTP ROM size: 1K * 16 bits. One internal interrupts: T0, TC0.
RAM size: 48 * 8 bits. One external interrupts: INT0.
Four levels stack buffer
 Two 8-bit Timer/Counter
 I/O pin configuration T0: Basic Timer with 0.5sec RTC.
Bi-directional: P0, P1, P2, P5. TC0: Auto-reload timer/Counter/Buzzer output
Input only: P1.1.
Programmable open-drain: P1.0.  On chip watchdog timer and clock source is internal
Wakeup: P0, P1 level change trigger low clock RC type (16KHz @3V, 32KHz @5V).
Pull-up resisters: P0, P1, P2, P5.
External Interrupt trigger edge:  Dual system clocks
P0.0 controlled by PEDGE register. External high clock: RC type up to 10 MHz
External high clock: Crystal type up to 16 MHz
 3-Level LVD. Internal high clock: 16MHz RC type. Fcpu is limited to
Fosc/4~Fosc/16.
Reset system and power monitor. Internal low clock: RC type 16KHz(3V), 32KHz(5V)
 Powerful instructions  Operating modes
One clocks per instruction cycle (1T) Normal mode: Both high and low clock active
Most of instructions are one cycle only. Slow mode: Low clock only
All ROM area JMP instruction. Sleep mode: Both high and low clock stop
All ROM area CALL address instruction. Green mode: Periodical wakeup by T0 Timer
All ROM area lookup table function (MOVC)
 Package (Chip form support)
PDIP 14 pins
SOP 14 pins
SSOP 16 pins
MSOP 10 Pins
PDIP 8 pins
SOP 8 pins