UPD75P0076CU datasheet(39/62 Pages) NEC

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µPD75P0076

AC CHARACTERISTICS (TA = –40 to +85˚C, VDD = 1.8 to 5.5 V)

Parameter

Symbol

Test conditions

MIN.

TYP.

MAX.

Unit

CPU clock cycle

tCY

Operating on

VDD = 2.7 to 5.5 V

0.67

µs

time Note 1

main system clock

0.95

µs

(Minimum instruction execution

Operating on

114

122

125

µs

time = 1 machine cycle)

subsystem clock

TI0, TI1 input

fTI

VDD = 2.7 to 5.5 V

1.0

MHz

frequency

275

kHz

TI0, TI1 input

tTIH, tTIL

VDD = 2.7 to 5.5 V

0.48

µs

high-/low-level width

1.8

µs

Interrupt input high-/

tINTH, tINTL

INT0

IM02 = 0

Note 2

µs

low-level width

IM02 = 1

µs

INT1, 2, 4

µs

KR0 to KR3

µs

RESET low-level width

tRSL

µs

Notes 1. The cycle time (minimum instruction

execution time) of the CPU clock (

Φ)

is determined by the oscillation

frequency of the connected resonator

(and external clock), the system clock

control register (SCC) and the

processor clock control register

(PCC).

The figure at the right

indicates the cycle time tCY versus

supply voltage VDD characteristic with

the main system clock operating.

2. 2tCY or 128/fx is set by setting the

interrupt mode register (IM0).

0.5

Supply Voltage VDD [V]

tCY vs VDD

(At main system clock operation)

Guaranteed Operation

Range

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