參數資料
型號: μPD780021Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數: 44/66頁
文件大小: 453K
代理商: ΜPD780021Y
μ
PD780021Y, 780022Y, 780023Y, 780024Y
Preliminary Data Sheet
44
(2) Read/Write Operation (T
A
= –40 to + 85
°
C, V
DD
= 1.8 to 2.7 V) (3/3)
Parameter
Symbol
Test Conditions
MIN.
MAX.
Unit
ASTB high-level width
t
ASTH
0.5t
CY
ns
Address setup time
t
ADS
0.5t
CY
– 60
ns
Address hold time
t
ADH
20
ns
Data input time from address
t
ADD1
(2 + 2n)t
CY
– 233
ns
t
ADD2
(3 + 2n)t
CY
– 240
ns
Address output time from RD
t
RDAD
0
400
ns
Data input time from RD
t
RDD1
(2 + 2n)t
CY
– 325
ns
t
RDD2
(3 + 2n)t
CY
– 332
ns
Read data hold time
t
RDH
0
ns
RD low-level width
t
RDL1
(1.5 + 2n)t
CY
– 92
ns
t
RDL2
(2.5 + 2n)t
CY
– 92
ns
WAIT
input time from RD
t
RDWT1
0.5t
CY
– 132
ns
t
RDWT2
t
CY
– 132
ns
WAIT
input time from WR
t
WRWT
0.5t
CY
– 100
ns
WAIT low-level width
t
WTL
(0.5 + 2n)t
CY
+ 10
(2 + 2n)t
CY
ns
Write data setup time
t
WDS
60
ns
Write data hold time
t
WDH
20
ns
WR low-level width
t
WRL
(1.5 + 2n)t
CY
– 60
ns
RD
delay time from ASTB
t
ASTRD
20
ns
WR
delay time from ASTB
t
ASTWR
2t
CY
– 60
ns
ASTB
delay time from
RD
in external fetch
t
RDAST
0.8t
CY
– 60
1.2t
CY
ns
Address hold time from
RD
in external fetch
t
RDADH
0.8t
CY
– 60
1.2t
CY
+ 120
ns
Write data output time from RD
t
RDWD
40
ns
Write data output time from WR
t
WRWD
40
240
ns
Address hold time from WR
t
WRADH
0.8t
CY
– 60
1.2t
CY
+ 120
ns
RD
delay time from WAIT
t
WTRD
0.5t
CY
2.5t
CY
+ 100
ns
WR
delay time from WAIT
t
WTWR
0.5t
CY
2.5t
CY
+ 100
ns
Remarks 1.
t
CY
= T
CY
/4
2.
n indicates the number of waits.
相關PDF資料
PDF描述
μPD780022Y 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780024Y 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780024 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780021 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780022 8 Bit Single Chip Microcontrollers(8位單片微控制器)
相關代理商/技術參數
參數描述
PD780131 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD780131(A) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD780131(A1) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD780131(A2) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD780131A 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers