LC87F7DC8A_10 Datasheet, PDF (2/26 Pages) Sanyo Semicon Device – FROM 128K byte, RAM 4K byte on-chip 8-bit 1-chip Microcontroller

„Minimum Instruction Cycle Time (tCYC)
• 250ns (12MHz)
• 375ns (8MHz)
• 750ns (4MHz)
VDD=3.0 to 5.5V
VDD=2.5 to 5.5V
VDD=2.2 to 5.5V
LC87F7DC8A
„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
• Power pins
1 (RES)
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.
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