LC87F7NJ2A Datasheet, PDF (2/28 Pages) ON Semiconductor – 8-bit Microcontroller

LC87F7NJ2A
Function Details
 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 power sources 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 pins
: 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 a 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 counter timer 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 counter timer 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 a 6-bit prescaler
Timer5 : 8-bit timer with a 6-bit prescaler
Timer6 : 8-bit timer with a 6-bit prescaler (with toggle output)
Timer7 : 8-bit timer with a 6-bit prescaler (with toggle output)
Timer8 : 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) Used with a base timer, the day and time counter can be used as a 65000 day + minute + second counter.
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