LC87F7DC8A

No.A1156-2/26

Minimum Instruction Cycle Time (tCYC)

• 250ns (12MHz)

VDD=3.0 to 5.5V

• 375ns (8MHz)

VDD=2.5 to 5.5V

• 750ns (4MHz)

VDD=2.2 to 5.5V

Ports

• Normal withstand voltage I/O ports

Ports whose I/O direction can be designated in 1 bit units 29 (P0n, P1n, P70 to P73, P8n, XT2)

• Normal withstand voltage input port

1 (XT1)

• LCD ports

Segment output

54 (S00 to S53)

Common output

4 (COM0 to COM3)

Bias terminals for LCD driver

3 (V1 to V3)

Other functions

Input/output ports

54 (P3n, PAn, PBn, PCn, PDn, PEn, PFn,)

Input ports

7 (PLn)

• Dedicated oscillator ports

2 (CF1, CF2)

• Reset pin

1 (RES)

• Power pins

6 (VSS1 to VSS3, VDD1 to VDD3)

LCD Controller

1) Seven display modes are available (static, 1/2, 1/3, 1/4 duty

× 1/2, 1/3 bias)

2) Segment output and common output can be switched to general-purpose input/output ports

Small Signal Detection (MIC signals etc)

1) Counts pulses with the level which is greater than a preset value

2) 2-bit counter

Timers

• Timer 0: 16-bit timer/counter with two capture registers.

Mode 0: 8-bit timer with an 8-bit programmable prescaler (with two 8-bit capture registers)

× 2 channels

Mode 1: 8-bit timer with an 8-bit programmable prescaler (with two 8-bit capture registers)

+ 8-bit counter (with two 8-bit capture registers)

Mode 2: 16-bit timer with an 8-bit programmable prescaler (with two 16-bit capture registers)

Mode 3: 16-bit counter (with two 16-bit capture registers)

• 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 8-bit 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 4: 8-bit timer with a 6-bit prescaler

• Timer 5: 8-bit timer with a 6-bit prescaler

• 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)

• Timer 8: 16-bit timer

Mode 0: 8-bit timer with an 8-bit prescaler

× 2 channels

Mode 1: 16-bit timer with an 8-bit prescaler

• 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

• Day and time counter

1) Using with a base timer, it can be used as 65000 day + minute + second counter.