The SH69P26 is a single-chip 4-bit microcontroller. This device integrates a SH6610D CPU core, 6K words of OTPROM, 389
nibbles of RAM, to 8-bit timer/counter and one 16-bit timer/counter, comparator, two channel tone generators, on-chip
oscillator clock circuitry, on-chip watchdog timer, low voltage reset function. The SH69P26 is suitable for microwave oven
application.
- SH6610D-based single-chip 4-bit micro-controller
OTPROM: 6k X 16 bits
RAM: 389 X 4 bits
– 69 System control register
– 320 Data memory
Operation voltage:
– fOSC = 30kHz – 4MHz, VDD = 2.4V – 5.5V
– fOSC = 4MHz – 8MHz, VDD = 4.5V – 5.5V
29 CMOS bi-directional I/O pins
8-level stack (including interrupts)
Two 8-bit auto re-loaded timer/counter, one can switch to
external clock source
Warm-up timer
Built-in pull-high for I/O port
Powerful interrupt sources:
– Timer0 interrupt
– Timer1 interrupt
– Timer2 interrupt
– External interrupts: PORTF (Falling edge), CMPOUT
Oscillator (code option)
– Crystal oscillator: 32.768kHz, 400kHz – 8MHz - – Ceramic resonator: 400kHz – 8MHz
– External RC oscillator: 400kHz – 8MHz
– Internal RC oscillator: 2MHz, 4MHz, 6MHz
– External clock: 30kHz – 8MHz
Instruction cycle time (4/fOSC)
Two low power operation modes: HALT and STOP
Reset:
– Built-in watchdog timer (code option)
– Built-in Power-on Reset (POR)
– Built-in Low Voltage Reset (LVR)
Two-level Low Voltage Reset (LVR) (code option)
One 16-bit timer/counter for pulse measurement
LED numeric display drive capability on PORTA, PORTB,
PORTD and PORTH [1:0]
Built-in one comparator
Read ROM Table function
2 channels Tone generator
Internal reliable reset circuit
OTP type/code protection
28-pin SKINNY/28-pin SOP/32-pin DIP package
This is the microwave oven control board
Pinout microcontroller
The diagram of the microwave oven where this microcontroller is used
