UPD17145GTA1 datasheet(3/102 Pages) NEC

Part #	UPD17145GTA1

Description	SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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3

µPD17145(A1), 17147(A1), 17149(A1)

POC circuit

Operating voltage

Package

One-time PROM version

µPD17P149

Timer

3 channels

• Internal interrupt: 4

FUNCTION LIST

Part Number

µPD17145 (A1)

µPD17147 (A1)

µPD17149 (A1)

Item

ROM capacity

2 KB (1024

× 16 bits)

4 KB (2048

× 16 bits)

8 KB (4096

× 16 bits)

RAM capacity

110

× 4 bits

Stack

Address stack

× 5, interrupt stack × 3

• I/O

: 20

I/O ports

23

• Input

: 2

• Sense input (INT pinNote): 1

A/D converter input

4 channels (shared with port pins), absolute accuracy:

±1.5 LSB MAX.

• 8-bit timer/counter:

2 channels (can be used as 1 channel of 16-bit timer)

• 7-bit basic interval timer:

1 channel (can be used as watchdog timer)

Serial interface

1 channel (3-wire)

• Multiple interrupt by hardware (3 levels MAX.)

• External interrupt (INT): 1

Rising edge, falling edge, or both rising and falling

edges selectable for detection.

Interrupt

• Timer 0 (TM0)

• Timer 1 (TM1)

• Basic interval timer (BTM)

• Serial interface (SIO)

Instruction execution time

2

µs (at 8 MHz, ceramic oscillation)

Standby function

HALT, STOP

Mask option

(Can be used in application circuit that operates on VDD = 5 V

± 10 %, 400 kHz to 4 MHz)

2.7 to 5.5 V (at 400 kHz to 2 MHz)

4.5 to 5.5 V (at 400 kHz to 8 MHz)

28-pin plastic shrink DIP (400 mil)

28-pin plastic SOP (375 mil)

Quality grade is "standard" and not (A1).

Operating temperature range: Ta = –40 to +85 ˚C

Note

The INT pin is used as an input pin (sense input) when the external interrupt function is not used.

The status of this pin is read by using the INT flag of a control register, not by a port register.

Caution

The PROM version is functionally compatible with the mask ROM versions but its internal

circuit and part of the electrical characteristics are different from those of the mask ROM

versions. To replace the PROM version with a mask ROM version, thoroughly conduct

application evaluation by using a sample of the mask ROM version.

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UPD17145GTA1 Datasheet(PDF) 3 Page - NEC

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