ENA1840 Datasheet, PDF (1/29 Pages) ON Semiconductor – 8-bit 1-chip Microcontroller

Ordering number : ENA1840
LC877917A
CMOS IC
16K-byte ROM and 512-byte RAM integrated
8-bit 1-chip Microcontroller
http://onsemi.com
Overview
The LC877917A is an 8-bit microcomputer that, centered around a CPU running at a minimum bus cycle time of
250ns, integrates on a single chip a number of hardware features such as 16K-byte ROM, 512-byte RAM, a LCD
controller/driver, sophisticated 16-bit timer/counter (may be divided into 8-bit timers), a 16-bit timer/counter (may be
divided into 8-bit timers/counters or 8-bit PWMs), four 8-bit timers with a prescaler, a calendar function (RTC), a
synchronous SIO interface (with automatic block transmission/reception capabilities), an asynchronous/synchronous
SIO interface, a UART interface (full duplex), a 12-bit/8-bit 7-channel AD converter, high-speed clock counter, a
system clock frequency divider, a power on reset function and a 21-source 10-vector interrupt feature.
Features
 ROM
• 16384×8 bits
RAM
• 512 × 9 bits
Minimum Bus Cycle
• 250ns (4MHz) VDD=2.4V to 3.6V
Note: The bus cycle time here refers to the ROM read speed.
Minimum instruction cycle time
• 750ns (4MHz) VDD=2.4 to 3.6V
Temperature range
• -40°C to +85°C
Semiconductor Components Industries, LLC, 2013
May, 2013
Ver.0.97
O0610HKIM 20100914-S00003 No.A1840-1/29