UPD784218 Datasheet, PDF (70/92 Pages) NEC – 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784218, 784218Y
AC Characteristics
(2) External wait timing
Parameter
Symbol
Conditions
Input time from address to
WAIT↓
tDAWT
VDD = 5.0 V
VDD = 3.0 V
Input time from ASTB↓ to
WAIT↓
tDSTWT
VDD = 5.0 V
VDD = 3.0 V
Hold time from ASTB↓ to
WAIT
tHSTWT
VDD = 5.0 V
VDD = 3.0 V
Delay time from ASTB↓ to
WAIT↑
tDSTWTH VDD = 5.0 V
VDD = 3.0 V
Input time from RD↓ to WAIT↓ tDRWTL VDD = 5.0 V
VDD = 3.0 V
Hold time from RD↓ to WAIT↓ tHRWT VDD = 5.0 V
VDD = 3.0 V
Delay time from RD↓ to WAIT↑ tDRWTH VDD = 5.0 V
VDD = 3.0 V
Input time from WAIT↑ to data tDWTID VDD = 5.0 V
VDD = 3.0 V
Delay time from WAIT↑ to RD↑ tDWTR VDD = 5.0 V
VDD = 3.0 V
Delay time from WAIT↑ to WR↑ tDWTW VDD = 5.0 V
VDD = 3.0 V
Input time from WR↓ to WAIT↓ tDWWTL VDD = 5.0 V
VDD = 3.0 V
Hold time from WR↓ to WAIT
tHWWT VDD = 5.0 V
VDD = 3.0 V
Delay time from WR↓ to WAIT↑ tDWWTH VDD = 5.0 V
VDD = 3.0 V
MIN.
(0.5 + n) T + 5
(0.5 + n) T + 10
nT + 5
nT + 10
0.5T
0.5T
0.5T
0.5T
nT + 5
nT + 10
Remark T: tCYK = 1/fXX (fXX: main system clock frequency)
a: 1 (during address wait), otherwise 0
n: Number of waits (n ≥ 0)
TYP.
MAX.
Unit
(2 + a) T – 40 ns
(2 + a) T – 60 ns
1.5T – 40
ns
1.5T – 60
ns
ns
ns
(1.5 + n) T – 40 ns
(1.5 + n) T – 60 ns
T – 40
ns
T – 60
ns
ns
ns
(1 + n) T – 40 ns
(1 + n) T – 60 ns
0.5T – 5
ns
0.5T – 10
ns
ns
ns
ns
ns
T – 40
ns
T – 60
ns
ns
ns
(1 + n) T – 40 ns
(1 + n) T – 60 ns
70
Data Sheet U12304EJ2V0DS00