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HD404459

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 ...

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SeekIC No. : 004360082 Detail

HD404459: 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...

HD404459 Data Sheet

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Part Number:
HD404459
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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


Pinout

Connection Diagram


Specifications

Item Symbol Value Unit Notes
Supply voltage VCC 0.3 to +4.0 V  
Pin voltage VT 0.3 to (VCC + 0.3) V  
Total permissible input current Io 50 mA  
Total permissible output current Io 50 mA  
Maximum input current Io 4 mA  
Maximum output current Io 4 mA  
Operating temperature Topr 20 to +75  
Storage temperature Tstg 55 to +125  



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 (ZTATTM version).

The HD404459 is a PROM version (ZTATTM microcomputer). A program can be written to the PROM by a PROM writer, thus dramatically shortening system development periods and turnaround time (ZTATTM versions are 27256-compatible).ZTATTM: Zero Turn Around Time ZTAT is a trademark of Hitachi, Ltd.




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