LC87F7LC8A Datasheet, PDF (2/25 Pages) Sanyo Semicon Device – CMOS IC FROM 128K byte, RAM 4096 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 3.0V
VDD=2.2 to 2.5V
LC87F7LC8A
„Ports
• Normal withstand voltage I/O ports
Ports whose I/O direction can be designated in 1 bit units 27(P1n, P30 to P35, P70 to P73, P8n, XT2)
Ports whose I/O direction can be designated in 4 bit units 8(P0n)
• Normal withstand voltage input port
1(XT1)
• LCD ports
Segment output
48(S00 to S47)
Common output
4(COM0 to COM3)
Bias terminals for LCD driver
3(V1 to V3)
Other functions
Input/output ports
48(PAn, PBn, PCn, PDn, PEn, PFn)
Input ports
7(PLn)
• Dedicated oscillator ports
2(CF1, CF2)
• Reset pin
1(RES)
• Power supply
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)
• Timer1: 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.)
• Timer4: 8-bit timer with 6-bit prescaler
• Timer5: 8-bit timer with 6-bit prescaler
• Timer6: 8-bit timer with 6-bit prescaler (with toggle output)
• Timer7: 8-bit timer with 6-bit prescaler (with toggle output)
• Timer8: 16-bit timer
Mode 0: 8-bit timer with an 8-bit prescaler ×2 channels (with toggle output)
Mode 1: 16-bit timer with an 8-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
• Day and time counter
1) Using with a base timer, it can be used as 65000 day + minute + second counter.
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