HD404829R Datasheet, PDF (3/149 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a LCD controller/Driver Circuit

HD404829R Series
AS Microcomputer Incorporating a LCD controller/Driver Circuit
ADE-202-057C
Rev.4
Sept. 1999
Description
The HD404829R series incorporates an 8-bit A/D converter (four channels), a Liquid Crystal Display
(LCD) and a serial interface, and has large-current Input/Output (I/O) pins. The series is a 4-bit single-chip
microcomputer best used in the AV equipment such as CD radio cassette tape recorders which require the
LCD display control.
The HD404829R Series, with a 32.768kHz sub-oscillator for clocks, counts up the system clock and a
variety of power modes can reduce power consumption.
The HD4074829 is a ZTAT ^TM microcomputer which incorporates a PROM. System development period
has been dramatically reduced so that the process from debugging to mass production is smooth. (The
PROM programming specifications are the same as those for Type 27256.)
ZTAT^TM: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd.
Features
• 1,876-digit × 4-bit RAM
• 44 I/O pins, including 10 high-current pins (15 mA, max.) and 20 pins multiplexed with LCD segment
pins
• Four timer/counters
• 8-bit input capture circuit
• Three timer outputs (including two PWM out-puts)
• Two event counter inputs (including one double-edge function)
• Clock-synchronous 8-bit serial interface
• A/D converter (4 channels × 8 bits)
• LCD controller/driver (52 segments × 4 commons)
• Built-in oscillators
 Main clock: 4.2-MHz ceramic (an external clock is also possible)
 Subclock: 32.768-kHz crystal
• Eleven interrupt sources
 Five by external sources, including three double-edge functions