HD404629R Datasheet, PDF (3/157 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

HD404629R Series
AS Microcomputer Incorporating a DTMF Generator Circuit
ADE-202-048D
Rev.5.0
Sept. 1999
Description
The HD404629R Series is part of the HMCS400-Series microcomputers designed to increase program
productivity and also incorporate large-capacity memory. Each microcomputer has a high precision dual-
tone multifrequency (DTMF) generator, LCD controller/driver, A/D converter, input capture circuit, 32-
kHz oscillator for clock, and four low-power dissipation modes.
The HD404629R Series includes four chips: the HD404628R with 8-kword ROM; the HD4046212R with
12-kword ROM; the HD404629R with 16-kword ROM; the HD4074629 with 16-kword PROM.
A program can be written to the PROM by a PROM writer, which can dramatically shorten system
development periods and smooth the process from debugging to mass production.
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)
• On-chip DTMF generator
• Built-in oscillators
 Main clock: 4-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
 Six by internal sources
• Subroutine stack up to 16 levels, including interrupts