SH6631A 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.
SH6631A Key Features
- 3.6V (Typically 3.0V) 14 CMOS bi-directional I/O pins 4-level subroutine nesting (including interrupts) One 8-bit auto r
- Internal interrupt (Timer0)
- External interrupts: PortB & PortC (Falling edge)
- 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 (