SH6631A Datasheet | Sino Wealth

Features SH6610C-based single-chip 4-bit micro-controller ROM: 1024 X 16 bits ROM RAM: 48 X 4 bits RAM (Data Memory) Operation voltage: 1.8V - 3.6V (Typically 3.0V) 14 CMOS bi-directional I/O pins 4-level subroutine nesting (including interrupts) One 8-bit auto re-loadable timer/counter Warm-up timer for power-on reset Powerful interrupt sources: - Internal interrupt (Timer0). - External interrupts: Port B & Port C (Falling edge). Built-in remote control carrier synthesizer FOSC/8 or FOSC/12 by software option Oscillator Ceramic resonator: 400K - 4MHz. Instruction cycle time: - 4/455KHz ( ≈ 8.79µs) for 455KHz OSC clock - 4/3.64MHz ( ≈ 1.1µs) for 3.64MHz OSC clock Two low power operation modes: HALT and STOP Pull-up resistor for reset pin (code option) Port interrupt source select (code option) General Description SH6631A is dedicated to infrared remote control transmitter applications. This chip integrates the SH6610C 4-bit CPU core with SRAM, program ROM, an 8-bit timer, and programmable input/output driving buffers and carrier synthesizer. The standby function, which can be used to stop/start the ceramic resonator oscillation, facilitating the low power dissipation of the system. Pin Configuration PORTC.2 PORTC.3 PORTD.0 PORTD.1 OSCO OSCI GND RESET 1 2 3 4 5 6 7 8 9 20 PORTC.1 19 PORTC.0 18 PORTB.3 17 PORTB.2 16 PORTB.1 15 PORTB.0 14 PORTA.3 13 PORTA.2 12 PORTA.1 11 PORTA.0 1 V2.3 Block Diagram RESET OSCI OSCO LOW VOLTAGE DETECTION PRESCALER 8-BIT TIMER (UP COUNTER) TIMER INTERRUPT CTL REG. ROM 1024 X 16BIT DATA RAM 48 X 4 BIT PORTA (4 BITS) PORTB (4 BITS) PORTC (4 BITS) PORTD (2 BITS) REMOTE CONTROL SYNTHESIZER PORTA [1:3] PORTB [0:3] PORTC [0:3] PORTD [0:1] REM Pin Descriptions Pin No. Designation I/O Descriptions 19, 20, 1, 2 PC0 ~ PC3 I/O Bit programmable I/O pins, Vector Interrupt (Active falling edge). 3, 4 PD0 ~ PD1 I/O Bit programmable I/O...