HD404054 Datasheet, PDF (1/101 Pages) Hitachi Semiconductor – HMCS400-series microcomputers designed to increase program productivity with large-capacity memory

HD404054 Series/HD404094 Series
Rev. 6.0
Sept. 1998
Description
The HD404054 Series and HD404094 Series are HMCS400-series microcomputers designed to increase
program productivity with large-capacity memory. Each microcomputer has three timers, one serial
interface, comparator, input capture circuit.
The HD404054 Series includes three chips: the HD404052 with 2-kword ROM; the HD404054 with 4-
kword ROM; and the HD4074054 with 4-kword PROM (ZTAT™ version). Also, the HD404094 Series
includes three chips: the HD404092 with 2-kword ROM; the HD404094 with 4-kword ROM; and the
HD4074094 with 4-kword PROM (ZTAT™ version).
The HD4074054 and HD4074094 are PROM version (ZTAT™ microcomputers). 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.)
Features
• The differences between HD404054 Series and HD404094 Series
I/O pins
HD404054 Series
HD404094 Series
10 large-current output pins: Six 15-mA sinks • 6 largecurrent output pins: Two 15-mA
and four 10-mA sources
sinks and four 10-mA sources
• 4 intermediate voltage output pins
• 27 I/O pins and 8 dedicated input pins
• Three timer/counters
• Eight-bit input capture circuit
• Two timer outputs (including two PWM outputs)
• One event counter inputs (including one double-edge function)
• One clock-synchronous 8-bit serial interface
• Comparator (2 channels)
• Built-in oscillators
 Main clock: Ceramic or crystal oscillator (an external clock is also possible)