參數(shù)資料
型號: μPD78P054
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機微控制器
文件頁數(shù): 43/86頁
文件大?。?/td> 502K
代理商: ΜPD78P054
43
μ
PD78P054, 78P058
(b) Except when MCS = 1, PCC2 to PCC0 = 000B (T
A
= –40 to +85
°
C, V
DD
= 2.0 to 6.0 V)
(2/2)
Parameter
Symbol
Test Conditions
MIN.
MAX.
Unit
RD
delay time from ASTB
t
ASTRD
V
DD
= 2.7 to 6.0 V
0.4t
CY
– 30
ns
0.37t
CY
– 50
ns
WR
delay time from ASTB
t
ASTWR
V
DD
= 2.7 to 6.0 V
1.4t
CY
– 30
ns
1.37t
CY
– 50
ns
ASTB
delay time from RD
in external fetch t
RDAST
t
CY
– 10
t
CY
+ 20
ns
Address hold time from RD
in external fetch t
RDADH
t
CY
– 50
t
CY
+ 50
ns
Write data output time from RD
t
RDWD
V
DD
= 2.7 to 6.0 V
0.4t
CY
– 20
ns
0.37t
CY
– 40
ns
Write data output time from WR
t
WRWD
V
DD
= 2.7 to 6.0 V
0
60
ns
0
120
ns
Address hold time from WR
t
WRADH
V
DD
= 2.7 to 6.0 V
t
CY
t
CY
+ 60
ns
t
CY
t
CY
+ 120
ns
RD
delay time from WAIT
t
WTRD
V
DD
= 2.7 to 6.0 V
0.6t
CY
+ 180
2.6t
CY
+ 180
ns
0.63t
CY
+ 350
2.63t
CY
+ 350
ns
WR
delay time from WAIT
t
WTWR
V
DD
= 2.7 to 6.0 V
0.6t
CY
+ 120
2.6t
CY
+ 120
ns
0.63t
CY
+ 240
2.63t
CY
+ 240
ns
Remarks 1.
MCS: Bit 0 of the oscillation mode selection register (OSMS)
2.
PCC2 to PCC0: Bit 2 to bit 0 of the processor clock control register (PCC)
3.
t
CY
= T
CY
/4
4.
n indicates the number of waits.
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