HD404654S Datasheet | Hitachi Semiconductor

Description The HD404654 Series is a member of the HMCS400-series of microputers designed to increase program productivity with large-capacity memory. Each microputer has a high-precision dual-tone multi-frequency (DTMF) generator, three timers, serial interface, voltage parator, and input capture circuit. The HD404654 Series includes three chips: the HD404652 with 2 k-word ROM; the HD404654 with 4 kword ROM; and the HD4074654 with 4 k-word PROM (ZTAT ™ version). The HD4074654 is a PROM version (ZTAT™ microputer). 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-patible.) ZTAT ™ : Zero Turn Around Time. ZTAT is a trademark of Hitachi Ltd. Features .. - 27 I/O pins and 5 dedicated input pins  10 high-current output pins: Six 15-m A sinks and four 10-m A sources - Three timer/counters - Eight-bit input capture circuit - Two timer outputs (including two PWM outputs) - One event counter input (including one double-edge function) - One clock-synchronous 8-bit serial interface - Voltage parator (2 channels) - On-chip DTMF generator (f OSC = 400 k Hz, 800 k Hz, 2 MHz, 3.58 MHz or 4 MHz) - Built-in oscillators  Main clock: Ceramic or crystal oscillator (an external clock is also possible) - Six interrupt sources  Two by external sources  Four by internal sources - Subroutine stack up to 16 levels, including interrupts HD404654 Series - Two low-power dissipation modes  Standby mode  Stop mode - One external input for transition from stop mode to active mode - Instruction cycle time: 1 µs (f OSC = 4 MHz at 1/4 division ratio)  1/4 or 1/32 division ratio can be selected by hardware - Two operating modes  MCU mode  MCU/PROM mode (HD4074654) Ordering Information Type Product Name Model Name HD404652H HD404652S HD404654 ZTAT™ HD404654H HD404654S HD4074654 HD4074654H HD4074654S 4,096 4,096 ROM (Words) 2,048 RAM (digit) 512...