UPD178004A datasheet(4/56 Pages) NEC

Part #	UPD178004A

Description	8-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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

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µPD178004A, 178006A, 178016A, 178018A

4

Product name

µPD178004A

µPD178006A

µPD178016A

µPD178018A

Item

PLL frequency

Division mode

Two types

synthesizer

• Direct division mode (VCOL pin)

• Pulse swallow mode (VCOH and VCOL pins)

Reference frequency

7 types selectable by program (1, 3, 5, 9, 10, 25, 50 kHz)

Charge pump

Error out output: 2 (EO0 and EO1 pins Note 1)

Phase comparator

Unlock detectable by program

Frequency counter

• Frequency measurement

• AMIFC pin: for 450-kHz count

• FMIFC pin: for 450-kHz/10.7-MHz count

D/A converter (PWM output)

8-/9-bit resolution

× 3 channels (shared by 8-bit timer)

Standby function

• HALT mode

• STOP mode

Reset

• Reset by RESET pin

• Internal reset by watchdog timer

• Reset by power-ON clear circuit (3-value detection)

• Detection of less than 4.5 V Note 2 (CPU clock: fX)

• Detection of less than 3.5 V Note 2 (CPU clock: fX/2 or less and on power application)

• Detection of less than 2.5 V Note 2 (in STOP mode)

Power supply voltage

• VDD = 4.5 to 5.5 V (with PLL operating)

•VDD = 3.5 to 5.5 V (with CPU operating, CPU clock: fX/2 or less)

•VDD = 4.5 to 5.5 V (with CPU operating, CPU clock: fX)

Package

• 80-pin plastic QFP (14

× 14 mm, 0.65-mm pitch)

Notes 1. The EO1 pin can be set to high impedance for the

µPD178016A and 178018A.

The following shows an application example.

PD178016A

PD178018A

µ

EO0

EO1

VCOH

VCOL

LPF

VCO

To Mixer

LPF : Low path filter

VCO : Voltage controlled oscillator

• To lock to a target frequency at high speed

Setting the EO0 and EO1 pins to error out output improves the output current potential and LPF

voltage control potential.

• Normal state

Setting only the EO0 pin to error out output maintains the LPF stable.

2. These voltage values are maximum values. Reset is actually executed at a voltage lower than these

values.

(2/2)

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UPD178004A Datasheet(PDF) 4 Page - NEC

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