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LC87F54C8A-F51K8
Ordering number : ENN7851 LC87F54C8A CMOS IC FROM 128K-byte, RAM 4K-byte on chip 8-bit 1-chip Microcontroller Overview The LC87F54C8A is 8-bit single chip microcontroller with the following one-chip features : • CPU : Operable at a minimum bus cycle time of 100ns • On-chip Flash ROM Capacity : 128K bytes (on-board rewritable) • On-chip RAM Capacity : 4K bytes • Two high performance 16-bit timer/counters (can be divided into 8-bit timers) • Four 8-bit timers with prescalers • Timer for use as date/time clock • Two synchronous serial I/O ports (with automatic block transmit/receive function) • One asynchronous/synchronous serial I/O port • 12-bit PWM × 2 • 12-channel × 8-bit AD converter • High speed 8-bit parallel interface • High speed clock counter • System clock divider • 21-source 10-vectored interrupt system Features ■Read Only Memory (Flash ROM) • Single 5V power supply, on-board writeable • Block erase in 128 byte units • 131071 × 8 bits (LC87F54C8A) ■Bus Cycle Time • 100ns (10MHz) Note : Bus cycle time indicates the speed to read ROM. ■Minimum Instruction Cycle Time (tCYC) • 300ns (10MHz) Ver.1.00 73004 JO IM No.7851-1/25
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