參數(shù)資料
型號: MPC853TVR80
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 80 MHz, RISC PROCESSOR, PBGA256
封裝: PLASTIC, BGA-256
文件頁數(shù): 9/88頁
文件大?。?/td> 1185K
代理商: MPC853TVR80
MPC853T Hardware Specification, Rev. 1
Freescale Semiconductor
17
Bus Signal Timing
B26
CLKOUT rising edge to OE negated
(MAX = 0.00
× B1 + 9.00)
2.00
9.00
2.00
9.00
2.00
9.00
2.00
9.00
ns
B27
A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 10, TRLX = 1
(MIN = 1.25
× B1 – 2.00)
35.90
29.30
23.00
16.90
ns
B27a A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 11, TRLX = 1
(MIN = 1.50
× B1 – 2.00)
43.50
35.50
28.00
20.70
ns
B28
CLKOUT rising edge to
WE(0:3)/BS_B[0:3] negated GPCM
write access CSNT = 0
(MAX = 0.00
× B1 + 9.00)
9.00
9.00
9.00
9.00
ns
B28a CLKOUT falling edge to
WE(0:3)/BS_B[0:3] negated GPCM
write access TRLX = 0,1 CSNT = 1,
EBDF = 0 (MAX = 0.25
× B1 + 6.80)
7.60
14.30
6.30
13.00
5.00
11.80
3.80
10.50
ns
B28b CLKOUT falling edge to CS negated
GPCM write access TRLX = 0,1
CSNT = 1 ACS = 10 or ACS = 11,
EBDF = 0 (MAX = 0.25
× B1 + 6.80)
14.30
13.00
11.80
10.50
ns
B28c CLKOUT falling edge to
WE(0:3)/BS_B[0:3] negated GPCM
write access TRLX = 0,1 CSNT = 1 write
access TRLX = 0,1 CSNT = 1,
EBDF = 1 (MAX = 0.375
× B1 + 6.6)
10.90 18.00
7.00
14.30
5.20
12.30
ns
B28d CLKOUT falling edge to CS negated
GPCM write access TRLX = 0,1
CSNT = 1, ACS = 10, or ACS = 11,
EBDF = 1 (MAX = 0.375
× B1 + 6.6)
18.00
18.00
14.30
12.30
ns
B29
WE(0:3)/BS_B[0:3] negated to D(0:31),
DP(0:3) High-Z GPCM write access,
CSNT =0, EBDF=0
(MIN = 0.25
× B1 – 2.00)
5.60
4.30
3.00
1.80
ns
B29a WE(0:3)/BS_B[0:3] negated to D(0:31),
DP(0:3) High-Z GPCM write access,
TRLX = 0, CSNT =1, EBDF=0
(MIN = 0.50
× B1 – 2.00)
13.20
10.50
8.00
5.60
ns
B29b CS negated to D(0:31), DP(0:3), High-Z
GPCM write access, ACS = 00,
TRLX = 0,1 & CSNT = 0
(MIN = 0.25
× B1 – 2.00)
5.60
4.30
3.00
1.80
ns
Table 9. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
50 MHz
66 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
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