Ordering number : ENA2304 LC87F0G08A CMOS LSI 8-bit 1-chip Microcontroller LC87F0G08A Function Details Flash ROM Capable of on-board programming with a wide range of supply voltages : 2.2 to 5.5V Block-erasable in 128 byte units Writes data in 2-byte units 8192 8 bits RAM 256 9 bits Bus Cycle Time 83.3ns ( 12MHz, V =2.7V to 5.5V, Ta=40C to 85C) DD 125ns ( 8MHz, V =2.0V to 5.5V, Ta=40C to 85C) DD 250ns ( 4MHz, V =1.8V to 5.5V, Ta=40C to 85C) DD Note : The bus cycle time here refers to the ROM read speed. Minimum Instruction Cycle Time (tCYC) 250ns (12MHz, V =2.7V to 5.5V, Ta=40C to 85C) DD 375ns ( 8MHz, V =2.0V to 5.5V, Ta=40C to 85C) DD 750ns ( 4MHz, V =1,8V to 5.5V, Ta=40C to 85C) DD Potrs Normal withstand voltage I/O ports whose I/O direction can be designated in 1-bit units 18(P0n, P1n, P70, CF1, CF2) Reset pins 1( ) RES Power supply pins 3(V 1, V 2,V 1) SS SS DD Reference voltage outputs 1(VREF) Dedicated debugger port 1(OWP0) Timers Timer 0 : 16-bit timer/counter with 2 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 lower-order 8 bits) Mode 3 : 16-bit timer with an 8-bit prescaler (with toggle outputs) (lower-order 8 bits may be used as a PWM output) Base timer (1) The clock is selectable from the subclock (32.768kHz crystal oscillation), the low speed RC, system clock, and timer 0 prescaler output. (2) with an 8-bit programmable prescaler (3) Interrupts programmable in 5 different time schemes No.A2304-2/31