UPD178002 datasheet(33/48 Pages) NEC

Part #	UPD178002

Description	8-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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33

µPD178002, 178003

Data Sheet U12628EJ3V0DS00

AC Characteristics

(1) Basic operation (TA = –40 to +85

°C, VDD = 3.5 to 5.5 V)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Cycle time

TCY

fXX = fX/2Note 1, fX = 4.5 MHz operation

0.89

14.22

µs

(Minimum instruction

fXX = fXNote 2,

4.5 V

≤ VDD ≤ 5.5 V

0.44

7.11

µs

execution time)

fX = 4.5 MHz operation

3.5 V

≤ VDD < 4.5 V

0.89

7.11

µs

TI1, TI2 input

fTI

4.5 V

≤ VDD ≤ 5.5 V

0

4.5

MHz

frequency

3.5 V

≤ VDD < 4.5 V

0

275

kHz

TI1, TI2 input high-/

tTIH,

4.5 V

≤ VDD ≤ 5.5 V

111

ns

low-level width

tTIL

3.5 V

≤ VDD < 4.5 V

1.8

µs

Interrupt input high-/

tINTH,

INTP0

8/fsamNote 3

µs

low-level width

tINTL

INTP1

10

µs

RESET low level

tRSL

10

µs

width

Notes 1. When the oscillation mode select register (OSMS) is set to 00H.

2. When OSMS is set to 01H.

3. Selection of fsam = fXX/2N, fXX/32, fXX/64, fXX/128 is possible with bits 0 (SCS0) and 1 (SCS1) of sampling

clock select register (SCS) (when N = 0 to 4).

Remarks 1. fXX: System clock frequency (fX or fX/2)

2. fX: System clock oscillation frequency

TCY vs. VDD (At fXX = fX/2 system clock operation)

TCY vs. VDD (At fXX = fX system clock operation)

60

10

2.0

1.0

0.5

0.4

0

123

4

5

6

Supply voltage VDD [V]

Guaranteed

operation

range

60

10

2.0

1.0

0.5

0.4

0

123

4

5

6

Supply voltage VDD [V]

Guaranteed

operation

range

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