UPD17149CT datasheet(11/102 Pages) NEC

Part #	UPD17149CT

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

Download	102 Pages

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Manufacturer	NEC [NEC]

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

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11 / 102 page

11

µPD17145(A1), 17147(A1), 17149(A1)

1.2 Equivalent Circuit of Pin

The input/output circuit of each pin is shown below, partially simplified.

(1) P0A0 to P0A3 and P0B0 to P0B3

data

output

disable

pull-up

flag

VDD

P-ch

N-ch

VDD

Output latch

Selector

Input buffer

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