LC87F1A32A

No.A0704-2/26

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 (VSS1 to 3, VDD1 to 3)

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