HD404094

Notes: Permanent damage may occur if these absolute maximum ratings are exceeded. Normal operation must be under the conditions stated in the electrical characteristics tables. If these conditions are exceeded, the LSI may malfunction or its reliability may be affected.
1. Applies to D13 (VPP) of HD4074054 and HD4074094.
2. Applies to D4 to D7 of HD404092, HD404094, and HD4074094.
3. The total permissible input current is the total of input currents simultaneously flowing in from all the I/O pins to GND.
4. The total permissible output current is the total of output currents simultaneously flowing out from VCC to all I/O pins.
5. The maximum input current is the maximum current flowing from each I/O pin to GND.
6. Applies to D0D3, and R0R4.
7. Applies to D4D9 .
8. The maximum output current is the maximum current flowing out from V_CC to each I/O pin.
9. Applies to D4D9 and R0R4.
10. Applies to D0D3.

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 and HD404094 includes three chips: the HD404052 with 2-kword ROM; the HD404054 with 4-kword ROM; and the HD4074054 with 4-kword PROM (ZTAT^TM 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^TM version).

The HD404054 Series and HD404094 are PROM version (ZTAT^TM 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^TM version is 27256-compatible.)