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75008 Dataheets PDF



Part Number 75008
Manufacturers NEC
Logo NEC
Description UPD75008
Datasheet 75008 Datasheet75008 Datasheet (PDF)

DATA SHEET MOS INTEGRATED CIRCUIT µPD75004, 75006, 75008 4-BIT SINGLE-CHIP MICROCOMPUTER DESCRIPTION The µPD75008 is one of the 75X Series 4-bit single-chip microcomputer. In addition to high-speed operation with 0.95 µs minimum instruction execution time for the CPU, the µPD75008 employs a serial bus interface with standard NEC format, the µPD75004 is a powerful product with a high cost/performance ratio. The µPD75P008 with PROM, which is provided with µPD75008, is applicable for evaluating sys.

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DATA SHEET MOS INTEGRATED CIRCUIT µPD75004, 75006, 75008 4-BIT SINGLE-CHIP MICROCOMPUTER DESCRIPTION The µPD75008 is one of the 75X Series 4-bit single-chip microcomputer. In addition to high-speed operation with 0.95 µs minimum instruction execution time for the CPU, the µPD75008 employs a serial bus interface with standard NEC format, the µPD75004 is a powerful product with a high cost/performance ratio. The µPD75P008 with PROM, which is provided with µPD75008, is applicable for evaluating systems under development, or for small-scale production of developed systems. Detailed functions are described in the following user’s manual. Be sure to read it for designing. µPD7500X Series User’s Manual: IEM-5033 FEATURES • Capable of high-speed operation and variable instruction execution time to power save • 0.95 µs, 1.91 µs, 15.3 µs (Main system clock: operating at 4.19 MHz) • 122 µs (Subsystem clock: operating at 32.768 kHz) • 75X architecture comparable to that for an 8-bit microcomputer is employed • Built-in NEC standard serial bus interface (SBI) • Clock operation at reduced power dissipation (5 µA TYP. : operating at 3 V) • Enhanced timer function (3 channels) • Interrupt functions especially enhanced for applications, such as remote control receiver APPLICATIONS VCRs, CD players, telephones, cameras, blood pressure gauges, etc. Unless otherwise specified, µPD75008 is treated as the representative model throughout this manual. The information in this document is subject to change without notice. Document No. IC-2633C (O. D. No. IC-7673E) Date Published November 1993 P Printed in Japan The mark 5 shows major revised points. © NEC Corporation 1990 µPD75004, 75006, 75008 ORDERING INFORMATION Part Number µPD75004CU-xxx µPD75004GB-xxx-3B4 µPD75006CU-xxx µPD75006GB-xxx-3B4 µPD75008CU-xxx µPD75008GB-xxx-3B4 Package 42-pin plastic shrink DIP (600 mil) 44-pin plastic QFP (s10 mm) 42-pin plastic shrink DIP (600 mil) 44-pin plastic QFP (s10 mm) 42-pin plastic shrink DIP (600 mil) 44-pin plastic QFP (s10 mm) Quality Grade Standard Standard Standard Standard Standard Standard Remarks: xxx is ROM code number. Please refer to “Quality Grade on NEC Semiconductor Devices” (Document Number IEI-1209) published by NEC Corporation to know the specification of quality grade on the devices and its recommended applications. 2 µPD75004, 75006, 75008 FUNCTIONAL OUTLINE Item Function Instruction Execution Time 0.95, 1.91, and 15.3 µs, (Main system clock: operating at 4.19 MHz) 122 µs (Subsystem clock: operating at 32.768 kHz) 4096 × 8-bit (µPD75004) Internal Memory ROM 6016 × 8-bit (µPD75006) 8064 × 8-bit (µPD75008) RAM 512 × 4-bit General-Purpose Registers • 4-bit manipulation: 8 • 8-bit manipulation: 4 8 CMOS Input pins 18 CMOS input/output pins Internal pull-up resistor specification by software is possible. : 25 I/O Port 34 Can directly drive LED: 4 8 N-ch open-drain input/output Can directly drive LED: 8 Withstand voltage: 10V Internal pull-up resistor specification by mask option is possible. Timer/event counter Timer 3 chs Basic interval timer: Also serves as watchdog timer Watch timer: Buzzer output possible Serial Interface 3-line serial I/O mode 2-line serial I/O mode SBI mode Bit Sequential Buffer 16 bits Clock Output Function Φ, fx/23, fx/24, fx/26 Vector Interrupt External: 3, Internal: 3 Test Input External: 1, Internal: 1 System Clock Oscillator Main system clock oscillation ceramic/crystal oscillator Subsystem clock oscillation crysal ocillator Standby Function STOP/HALT mode Operating Temperature Range –40 to +85°C Operating Supply Voltage 2.7 to 6.0 V Package 42-pin plastic shrink DIP (600 mil) 44-pin plastic QFP (s10 mm) 3 CONTENTS µPD75004, 75006, 75008 1. PIN CONFIGURATION (TOP VIEW) ............................................................................................... 6 2. BLOCK DIAGRAM ........................................................................................................................... 8 3. PIN FUNCTIONS .............................................................................................................................. 9 3.1 PORT PINS ............................................................................................................................................. 9 3.2 NON PORT PINS ................................................................................................................................... 11 3.3 PIN INPUT/OUTPUT CIRCUITS ........................................................................................................... 12 3.4 SELECTION OF MASK OPTION .......................................................................................................... 14 3.5 RECOMMENDED PROCESSING OF UNUSED PINS .......................................................................... 14 3.6 NOTES ON USING THE P00/INT4, AND RESET PINS ..................................................


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