參數(shù)資料
型號(hào): HD404449
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微機(jī)(4位單片微計(jì)算機(jī))
文件頁(yè)數(shù): 1/123頁(yè)
文件大小: 726K
代理商: HD404449
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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
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