LC877424A Datasheet, PDF (2/22 Pages) Sanyo Semicon Device – 8 Bit Single Chip Microcontroller Incorporating 48K/40K/32K/24K Byte ROM and 1536 byte RAM on Chip

Features
(1) Read-Only Memory (ROM)
• 49152 × 8 bits (LC877448A)
• 40960 × 8 bits (LC877440A)
• 32768 × 8 bits (LC877432A)
• 24576 × 8 bits (LC877424A)
LC877448A/40A/32A/24A
(2) Random Access Memory (RAM): 1536 × 9 bits (LC877448A, LC877440A, LC877432A, LC877424A)
(3) Minimum Bus Cycle Time: 100 ns (10MHz)
Note: The bus cycle time indicates ROM read time.
(4) Minimum Instruction Cycle Time: 300 ns (10MHz)
(5) Ports
• Input / output ports
Data direction programmable for each bit individually: 26 (P1n, P30 to P35, P70 to P73, P8n)
Data direction programmable in nibble units:
8 (P0n)
(When N-channel open drain output is selected, data can be input in bit units.)
• Input ports:
2 (XT1, XT2)
• 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)
• Oscillator pins:
2 (CF1, CF2)
• Reset pin:
1 (RES)
• Power supply:
6 (VSS1 to 3, VDD1 to 3)
(6) LCD controller
• Seven display modes are available (static, 1/2, 1/3, 1/4 duty × 1/2, 1/3 bias)
• Segment output and common output can be switched to general purpose input / output ports.
(7) Small signal detection (MIC signals etc)
• Counts pulses with the level which is greater than a preset value
• 2 bit counter
(8) Timers
• Timer 0: 16 bit timer / counter with capture register
Mode 0: 2 channel 8 bit timer with programmable 8 bit prescaler and 8 bit capture register
Mode 1: 8 bit timer with 8 bit programmable prescaler and 8 bit capture register + 8 bit
counter with 8 bit capture register
Mode 2: 16 bit timer with 8 bit programmable prescaler and 16 bit capture register
Mode 3: 16 bit counter with 16 bit capture register
• Timer 1: PWM / 16 bit timer / counter with toggle output function
Mode 0: 8 bit timer (with toggle output) + 8 bit timer / counter (with toggle output)
Mode 1: 2 channel 8 bit PWM
Mode 2: 16 bit timer / counter (with toggle output) Toggle output from lower 8 bits is also possible.
Mode 3: 16 bit timer (with toggle output) Lower order 8 bits can be used as PWM.
• Timer 4: 8 bit timer with 6 bit prescaler
• Timer 5: 8 bit timer with 6 bit prescaler
• Timer 6: 8 bit timer with 6 bit prescaler
• Timer 7: 8 bit timer with 6 bit prescaler
Continued on next page.
No.7776-2/22