參數(shù)資料
型號(hào): HD404459
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))
文件頁數(shù): 1/120頁
文件大?。?/td> 692K
代理商: HD404459
HD404459 Series
Rev. 6.0
Sept. 1998
Description
The HD404459 Series is a member of the 4-bit HMCS400-series microcomputers with large-capacity
memory and architecture providing high program productivity. Each microcomputer has a 32-kHz
oscillator for clock, low-voltage (1.8 V) operating mode, and four low-power dissipation modes.
The HD404459 Series includes three chips: the HD404458 with an 8-kword ROM; the HD404459 with a
16-kword ROM; and the HD4074459 with a 16-kword PROM (ZTAT
TM
version).
The HD4074459 is a PROM version (ZTAT
TM
microcomputer). A program can be written to the PROM by
a PROM writer, thus dramatically shortening system development periods and turnaround time (ZTAT
TM
versions are 27256-compatible).
ZTAT
TM
: Zero Turn Around Time ZTAT is a trademark of Hitachi, Ltd.
Features
8,192-word
×
10-bit ROM (HD404458)
16,384-word
×
10-bit ROM (HD404459 and HD4074459)
512-digit
×
4-bit RAM (HD404458)
768-digit
×
4-bit RAM (HD404459 and HD4074459)
56 I/O pins, including seven input pins
Four timer/counters
1-channel
×
8-bit input capture circuit
Three timer outputs (including two PWM outputs)
Two event counter inputs (including one double-edge function)
8-bit clock-synchronous serial interface
Eight wakeup inputs
Four-channel voltage comparator (external or internal reference power supply can be selected)
Built-in oscillators
Main clock: 4-MHz ceramic or crystal oscillator (an external clock is also possible)
Subclock: 32.768-kHz crystal
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