UPD784224 Datasheet, PDF (68/92 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784224, 784225, 784224Y, 784225Y
AC Characteristics
(TA = −40°C to +85°C, VDD = VDD0 = VDD1 = AVDD = 1.8 to 5.5 V, VSS = VSS0 = VSS1 = AVSS = 0 V)
(1) Read/write operation (2/3)
Parameter
Delay time from ASTB↓
to RD↓
Data hold time (from RD↑)
Address active time from
RD↑
Delay time from RD↑ to
ASTB↑
RD low-level width
Delay time from address to
WR↓
Address hold time
(from WR↑)
Delay time from ASTB↓ to
data output
Delay time from WR↓ to
data output
Delay time from ASTB↓ to
WR↓
Data setup time (to WR↑)
Symbol
Conditions
tDSTR
VDD = 5.0 V ±10%
tHRID
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%
tDRA
tDRST
tWRL
tDAW
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%
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%
tHRD
VDD = 5.0 V ±10%
VDD = 3.0 V ±10%
tDSTOD
tDWOD
tDSTW
VDD = 2.0 V ±10%
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%
VDD = 5.0 V ±10%
tSODWR
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.
TYP.
MAX.
Unit
0.5T − 9
ns
0.5T − 9
ns
0.5T − 20
ns
0
ns
0
ns
0
ns
0.5T − 2
ns
0.5T − 12
ns
0.5T − 35
ns
0.5T − 9
ns
0.5T − 9
ns
0.5T − 40
ns
(1.5 + n) T − 25
ns
(1.5 + n) T − 30
ns
(1.5 + n) T − 25
ns
(1 + a) T − 24
ns
(1 + a) T − 34
ns
(1 + a) T − 70
ns
0.5T − 14
ns
0.5T − 14
ns
0.5T − 14
ns
0.5T + 15
ns
0.5T + 30
ns
0.5T + 240
ns
0.5T − 9
0.5T − 30
ns
0.5T − 30
ns
0.5T − 30
ns
ns
0.5T − 9
ns
0.5T − 20
ns
(1.5 + n) T − 20
ns
(1.5 + n) T − 25
ns
(1.5 + n) T − 70
ns
Remark T: tCYK = 1/fXX (fXX: Main system clock frequency)
a: 1 (during address wait), otherwise, 0
n: Number of wait states (n ≥ 0)
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Data Sheet U12376EJ1V0DS00