SH66P20A

SH66P20A OTP 4-bit Microcontroller Features SH6610C-based single-chip 4-bit microcontroller ROM: 1K X 16 bits RAM: 64 X 4 bits (Data memory) Operation voltage: 2.4V - 6.0V (Typical 3.0V or 5.0V) 12 CMOS bi-directional I/O pins 4-level subroutine nesting (including interrupts) One 8-bit auto re-load timer/counter Warm-up timer for power on reset Powerful interrupt sources: - Internal interrupt (Timer0) - External interrupts: PortB & PortC (Falling edge) Oscillator (user option) - X`tal oscillator: 32.768KHz ~ 4MHz - Ceramic resonator: 400K ~ 4MHz - RC oscillator: 400K ~ 4MHz - External clock:30K ~ 4MHz Instruction cycle time: - 4/32.768KHz (≈ 122us) for 32.768KHz OSC clock - 4/4MHz (= 1us) for 4MHz OSC clock Two low power operation modes: HALT and STOP OTP type Code protection Built-in watchdog timer General Description SH66P20A is a 4-bit microcontroller. This chip integrates the SH6610C 4-bit CPU core with SRAM, 1K program ROM, Timer and I/O Port. Pin Configuration PORTA.2 PORTA.3 T0 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 PORTA.1 PORTA.0 OSCI OSCO VDD PORTC.3 PORTC.2 PORTC.1 PORTC.0 SH66P20A RESET GND PORTB.0 PORTB.1 PORTB.2 PORTB.3 www.DataSheet4U.com www.DataSheet4U.com 1 V2.3 SH66P20A Block Diagram OSCI XTAL/RC OTP OPTION OSC OSCO CPU OTP PROTECT RC WATCHDOG TIMER PRESCALER PORTA (4 BITS) PORTA [3:0] PORTB (4 BITS) PORTB [3:0] PORTC (4 BITS) PORTC [3:0] 8-BIT TIMER WDT TIME OUT TIMER INTERRUPT REG. OTP 1024 X 16BIT DATA RAM 64 X 4BIT GND VDD...