E202075_HD404889 Datasheet, PDF (3/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/
HD404868 Series
Low-Voltage AS Microcomputers with On-Chip LCD Circuit
ADE-202-075D (O)
Rev. 5.0
Feb. 2000
Description
The HD404889, HD404899, and HD404868 Series comprise low-voltage, 4-bit single-chip
microcomputers with a variety of on-chip supporting functions that include an LCD circuit, A/D converter,
multifunctional timers, and large-current I/O pins. These devices are suitable for system and display panel
control in a wide range of applications, including pagers, remote controllers, and home appliances equipped
with an LCD display.
The HD404878 Series comprises low-voltage, 4-bit single-chip microcomputers with no on-chip A/D
converter.
Each series is equipped with a 32.768 kHz sub-resonator for realtime clock use, providing a time counting
facility, and a variety of low-power modes to reduce current drain.
The HD4074889, HD4074899, and HD4074869 are ZTAT™ microcomputers with on-chip PROM that
drastically shortens development time and ensures a smooth transition from debugging to mass production.
(The PROM programming specifications are the same as for the 27256 type.)
ZTAT^TM: Zero Turn-Around Time. ZTAT^TM is a trademark of Hitachi, Ltd.
Features
• 46 I/O pins (HD404889/HD404899/HD404878 Series)
41 I/O pins (HD404868 Series)
Large-current I/O pins (source: 10 mA max.):4
Large-current I/O pins (sink: 15 mA max.): 8 (HD404889/HD404899/HD404878 Series)
6 (HD404868 Series)
LCD segment multiplexed pins:16
Analog input multiplexed pins: 6 (HD404889 and HD404899 Series)
4 (HD404868 Series)