OrdeOrdering numbering numberr : ENA1156A : ENA1156A LC87F7DC8A CMOS IC FROM 128K byte, RAM 4K byte on-chip LC87F7DC8A Minimum Instruction Cycle Time (tCYC) 250ns (12MHz) V =3.0 to 5.5V DD 375ns (8MHz) V =2.5 to 5.5V DD 750ns (4MHz) V =2.2 to 5.5V DD 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 (V 1 to V 3, V 1 to V 3) SS SS DD DD 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. No.A1156-2/26