UPD784224 Datasheet, PDF (71/92 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784224, 784225, 784224Y, 784225Y
(2) External wait timing (2/2)
Parameter
Hold time from WR↓ to
WAIT
Delay time from WR↓ to
WAIT↑
Symbol
tHWWT
tDWWTH
Conditions
VDD = 5.0 V ±10%
VDD = 3.0 V ±10%
VDD = 2.0 V ±10%
VDD = 5.0 V ±10%
VDD = 3.0 V ±10%
VDD = 2.0 V ±10%
MIN.
nT + 5
nT + 10
nT + 30
Remark T: tCYK = 1/fXX (fXX: Main system clock frequency)
a: 1 (during address wait), otherwise, 0
n: Number of wait states (n ≥ 0)
TYP.
MAX.
Unit
ns
ns
ns
(1 + n) T − 40
ns
(1 + n) T − 60
ns
(1 + n) T − 90
ns
Data Sheet U12376EJ1V0DS00
71