參數(shù)資料
型號: 9S12C128DGV1
英文描述: MC9S12C Family Device User Guide
中文描述: MC9S12C家庭設備用戶指南
文件頁數(shù): 123/136頁
文件大?。?/td> 2190K
代理商: 9S12C128DGV1
123
C.3 External Bus Timing
A timing diagram of the external multiplexed-bus is illustrated in
Figure C-5
with the actual timing
values shown on table Table C-4. All major bus signals are included in the diagram. While both a data
write and data read cycle are shown, only one or the other would occur on a particular bus cycle.
C.3.1 General Muxed Bus Timing
The expanded bus timings are highly dependent on the load conditions. The timing parameters shown
assume a balanced load across all outputs.
Figure C-5 General External Bus Timing
Addr/Data
(read)
PA, PB
Addr/Data
(write)
PA, PB
addr
data
data
5
9
10
11
8
16
6
ECLK
PE4
1, 2
3
4
addr
data
data
12
15
7
14
13
LSTRB
PE3
22
NOACC
PE7
25
PIPO0
PIPO1, PE6,5
28
20
21
23
26
29
24
27
R/W
PE2
17
19
18
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
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