The TMP86PS27FG is a single-chip 8-bit high-speed and high-functionality microcomputer incorporating 61440 bytes of One-Time PROM. It is pin-compatible with the TMP86CM27FG/CP27AFG (Mask ROM version). The TMP86PS27FG can realize operations equivalent to those of the TMP86CM27FG/CP27AFG by programming the on-chip PROM.

FEATUREs
1. 8-bit single chip microcomputer TLCS-870/C series
   - Instruction execution time :
      0.25 µs (at 16 MHz)
      122 µs (at 32.768 kHz)
   - 132 types & 731 basic instructions
2. 20interrupt sources (External : 7 Internal : 13)
3. Input / Output ports (55 pins)
   Large current output: 8pins (Typ. 20mA), LED direct drive
4. Prescaler
   - Time base timer
   - Divider output function
5. Watchdog Timer
6. 10-bit timer counter: 1ch (2 output pins)
   2ports output PPG (Programmed Pulse Generator)
   50%duty output mode
   Variable Duty output mode
   External-triggered start and stop
   Emargency stop pin
7. 8-bit timer counter : 2 ch
- Timer, Event counter, Programmable divider output (PDO),
   Pulse width modulation (PWM) output,
   Programmable pulse generation (PPG) modes
8. 8-bit UART : 1 ch
9. 8-bit SIO: 1 ch
10. 10-bit successive approximation type AD converter
   - Analog input: 8 ch
11. Key-on wakeup : 4 ch
12. LCD driver/controller
   Built-in voltage booster for LCD driver With display memory
   LCD direct drive capability (MAX 40 seg × 4 com)
   1/4,1/3,1/2duties or static drive are programmably selectable
13. Clock operation
   Single clock mode
   Dual clock mode
14. Low power consumption operation
   STOP mode: Oscillation stops. (Battery/Capacitor back-up.)
   SLOW1 mode: Low power consumption operation using low-frequency clock.(High-frequency clock stop.)
   SLOW2 mode: Low power consumption operation using low-frequency clock.(High-frequency clock oscillate.)
   IDLE0 mode: CPU stops, and only the Time-Based-Timer(TBT) on peripherals operate using high frequency clock. Release by falling edge of the source clock which is set by TBTCR<TBTCK>.
   IDLE1 mode: CPU stops and peripherals operate using high frequency clock. Release by interruputs(CPU restarts).
   IDLE2 mode: CPU stops and peripherals operate using high and low frequency clock. Release by interruputs. (CPU restarts).
   SLEEP0 mode: CPU stops, and only the Time-Based-Timer(TBT) on peripherals operate using low frequency clock.Release by falling edge of the source clock which is set by TBTCR<TBTCK>.
   SLEEP1 mode: CPU stops, and peripherals operate using low frequency clock. Release by interruput.(CPU restarts).
   SLEEP2 mode: CPU stops and peripherals operate using high and low frequency clock. Release by interruput.
15. Wide operation voltage:
   4.5 V to 5.5 V at 16MHz /32.768 kHz
   2.7 V to 5.5 V at 8 MHz /32.768 kHz