Ordering number : ENA0704A LC87F1A32A CMOS IC FROM 32K byte, RAM 2048 byte on-chip LC87F1A32A Minimum Bus Cycle 83.3ns (CF=12MHz) Note: The bus cycle time here refers to the ROM read speed. Minimum Instruction Cycle Time 250ns (CF=12MHz) Ports I/O ports Ports whose I/O direction can be designated in 1 bit units 28 (P10 to P17, P20 to P27, P30 to P34, P70 to P73, PWM0, PWM1, XT2) Ports whose I/O direction can be designated in 4 bit units 8 (P00 to P07) USB ports 2 (D+, D-) Dedicated oscillator ports 2 (CF1, CF2) Input-only port (also used for oscillation) 1 (XT1) Reset pins 1 ( ) RES Power pins 6 (V 1 to 3, V 1 to 3) SS DD Timers Timer 0: 16-bit timer/counter with a capture register. Mode 0: 8-bit timer with an 8-bit programmable prescaler (with an 8-bit capture register) 2 channels Mode 1: 8-bit timer with an 8-bit programmable prescaler (with an 8-bit capture register) + 8-bit counter (with an 8-bit capture register) Mode 2: 16-bit timer with an 8-bit programmable prescaler (with a 16-bit capture register) Mode 3: 16-bit counter (with a 16-bit capture register) Timer 1: 16-bit timer/counter that supports PWM/toggle outputs Mode 0: 8-bit timer with an 8-bit prescaler (with toggle outputs) + 8-bit timer/counter with an 8-bit prescaler (with toggle outputs) Mode 1: 8-bit PWM with an-8bit prescaler 2 channels Mode 2: 16-bit timer/counter with an 8-bit prescaler (with toggle outputs) (toggle outputs also possible from the lower-order 8 bits) Mode 3: 16-bit timer with an 8-bit prescaler (with toggle outputs) (The lower-order 8 bits can be used as PWM.) Timer 6: 8-bit timer with a 6-bit prescaler (with toggle output) Timer 7: 8-bit timer with a 6-bit prescaler (with toggle output) Base timer 1) The clock is selectable from the subclock (32.768kHz crystal oscillation), system clock, and timer 0 prescaler output. 2) Interrupts programmable in 5 different time schemes No.A0704-2/26