LC866548

Ordering number : ENN*6700 CMOS IC LC866548/40/32/28/24A 8-Bit Single Chip Microcontroller Preliminary Overview - CPU : Operable at a minimum bus cycle time of 0.5µs (microsecond) - On-chip ROM maximum capacity : 48K bytes - On-chip RAM capacity : 1152 bytes (LC866548A/40A/32A) : 896 bytes (LC866528A/24A) - VFD automatic display controller/driver - 16-bit timer/counter (or two 8-bit timers) - 16-bit timer/ PWM (or two 8-bit timers) - 8-channels × 8 bit AD Converter - Two 8-bit synchronous serial-interface circuits (1-channel × 16 bit, 1-channel × 8 bit) - 14-source 10-vectored interrupt system All of the above functions are fabricated on a single chip. Features (1) Read Only Memory (ROM) : LC866548A : LC866540A : LC866532A : LC866528A : LC866524A 49152 × 8 bits 40960 × 8 bits 32768 × 8 bits 28672 × 8 bits 24576 × 8 bits Ver.1.05 71896 91400 RM (IM) SK No.6700-1/21 LC866548/40/32/28/24A (2) Random Access Memory (RAM) : LC866548A/40A/32A LC866528A/24A 1152 × 8 bits 896 × 8 bits (3) Bus Cycle Time / Instruction Cycle Time The bus cycle time indicates the speed to read ROM. Bus cycle time 0.5µs 2µs 7.5µs 183µs Cycle time 1µs 4µs 15µs 366µs Clock divider 1/1 1/2 1/2 1/2 System clock oscillation Ceramic resonator oscillation Ceramic resonator oscillation RC resonator oscillation Crystal oscillation Oscillation Frequency 6MHz 3MHz 800MHz 32.768kHZ Voltage 4.5 - 6.0V 4.5 - 6.0V 4.5 - 6.0V 4.5 - 6.0V Note : External resisters (Rf, Rd) are required when X’tal oscillation is use...