UPD30121 NEC [NEC], UPD30121 Datasheet - Page 45

• Manufacturer Part Number: UPD30121
• Description: VR4121TM 64-/32-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

Data access time (from address)
Data access time (from ROMCS (0:3)# )
Data access time (from RD# )
Data input setup time
Data input hold time
(8) Normal ROM parameter (1/2)
Note The value of N is set by using the WROMA (0:2) bits of the BCUSPEEDREG register.
Remarks 1. Do not set CLKSEL (2:0) signal
CLKSEL2
Signal
The value of T is set by using the CLKSEL (0:2) signals (TxD/CLKSEL2, RTS#/CLKSEL1, and
DTR#/CLKSEL0 pins).
1
1
1
1
0
0
0
0
2. Do not set CLKSEL (2:0) signal
Parameter
= 111.
= 110, 101 with 131 MHz model.
CLKSEL1
Signal
1
1
0
0
1
1
0
0
Note
Note
CLKSEL0
Signal
1
0
1
0
1
0
1
0
Note
Symbol
Data Sheet U14691EJ1V0DS00
t
t
t
t
t
ACC
OE
DH
T (ns)
CE
DS
RFU
35
33
30
33
30
33
38
WROMA2
Condition
Bit
0
0
0
0
1
1
1
1
WROMA1
Bit
0
0
1
1
0
0
1
1
T
T
T
(N
MIN.
N
N
0
5
WROMA0
1)
19
19
Bit
0
1
0
1
0
1
0
1
29
MAX.
(TClock)
PD30121
N
9
8
7
6
5
4
3
2
Unit
ns
ns
ns
ns
ns
45