HD404449 Datasheet, PDF (1/123 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
Rev. 6.0
Sept. 1998
Description
The HD404449 Series is a HMCS400-series microcomputer designed to increase program productivity
with large-capacity memory. Each microcomputer has four timers, two serial interfaces, A/D converter,
input capture circuit, 32-kHz oscillator for clock, and four low-power dissipation modes.
The HD404449 Series includes three chips: the HD404448 with 8-kword ROM; the HD404449 with 16-
kword ROM; and HD4074449 with 16-kword PROM (ZTAT™ version).
The HD4074449 is a PROM version (ZTAT™ microcomputer). 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. (The ZTAT™ version is 27256-compatible.)
ZTAT™: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd.
Features
• 8,192-word × 10-bit ROM (HD404448)
16,384-word × 10-bit ROM (HD404449 and HD4074449)
• 1,152-digit × 4-bit RAM
• 64 I/O pins, including 10 high-current pins (15 mA, max)
• Four timer/counters
• Eight-bit input capture circuit
• Three timer outputs (including two PWM outputs)
• Two event counter inputs (including one double-edge function)
• Two clock-synchronous 8-bit serial interfaces
• A/D converter (4-channel × 8-bit)
• Built-in oscillators
 Main clock: 4-MHz ceramic oscillator or crystal (an external clock is also possible)
 Subclock: 32.768-kHz crystal
• Eleven interrupt sources
 Four by external sources, including two double-edge function
 Seven by internal sources