參數(shù)資料
型號(hào): MC68HC16S2CPU20
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, 20.97 MHz, MICROCONTROLLER, PQFP100
封裝: TQFP-100
文件頁(yè)數(shù): 4/104頁(yè)
文件大小: 640K
代理商: MC68HC16S2CPU20
MC68HC16S2
MOTOROLA
MC68HC16S2TS/D
101
NOTES:
1. All AC timing is shown with respect to 20% VDD and 70% VDD levels unless otherwise noted.
2. When previous bus cycle is not an ECLK cycle, the address may be valid before ECLK goes low.
3. Address access time = tEcyc – tEAD – tEDSR.
4. Chip select access time = tEcyc – tECSD – tEDSR.
Table 51 25.17 MHz ECLK Bus Timing
(V
DD
and V
DDSYN
= 5.0 Vdc
± 5%, V
SS
= 0 Vdc, T
A
= T
L
to T
H)
1
Num
Characteristic
Symbol
Min
Max
Unit
E1
ECLK Low to Address Valid2
tEAD
—40
ns
E2
ECLK Low to Address Hold
tEAH
10
ns
E3
ECLK Low to CS Valid (CS Delay)
tECSD
100
ns
E4
ECLK Low to CS Hold
tECSH
10
ns
E5
CS Negated Width
tECSN
20
ns
E6
Read Data Setup Time
tEDSR
25
ns
E7
Read Data Hold Time
tEDHR
5—
ns
E8
ECLK Low to Data High Impedance
tEDHZ
—40
ns
E9
CS Negated to Data Hold (Read)
tECDH
0—
ns
E10
CS Negated to Data High Impedance
tECDZ
—1
tcyc
E11
ECLK Low to Data Valid (Write)
tEDDW
—2
tcyc
E12
ECLK Low to Data Hold (Write)
tEDHW
5—
ns
E13
Address Access Time (Read)3
tEACC
255
ns
E14
Chip-Select Access Time (Read)4
tEACS
195
ns
E15
Address Setup Time
tEAS
1/2
tcyc
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