![](http://datasheet.mmic.net.cn/290000/XPC801ZP25_datasheet_16187868/XPC801ZP25_496.png)
Electrical Characteristics
MOTOROLA
MPC801 USER’S MANUAL
20-9
20
B36a
WE(0:3) Negated To A(6:31) Invalid -GPCM-
Write Access, TRLX=’0’, CSNT = '1’.
CS Negated To A(6:31) Invalid -GPCM- Write
Access, TRLX=’0’, CSNT = '1’, ACS = 10,
ACS = =’11’
18
—
8
—
ns
B36b
WE(0:3) Negated To A(6:31) Invalid -GPCM-
Write Access, TRLX=’1’, CSNT = '1’.
CS Negated To A(6:31) Invalid -GPCM- Write
Access, TRLX=’1’, CSNT = '1’, ACS = 10,
ACS = =’11’
58
—
28
—
ns
B37
CLKOUT Falling Edge To CS Valid–As Requested
By Control Bit CST4 In The Corresponding Word In
The UPM
TCC + 1
—
10
—
8
ns
B37a
CLKOUT Falling Edge To CS Valid–As Requested
By Control Bit CST1 In The Corresponding Word In
The UPM
0.25TC + TCC + 1
10
20
5
13
ns
B37b
CLKOUT Rising Edge To CS Valid–As Requested
By Control Bit CST2 In The Corresponding Word In
The UPM
TCC + 1
—
10
—
8
ns
B37c
CLKOUT Rising Edge To CS Valid–As Requested
By Control Bit CST3 In The Corresponding Word In
The UPM
0.25TC + TCC + 1
10
20
5
13
ns
B38
CLKOUT Falling Edge To BS Valid–As Requested
By Control Bit BST4 In The Corresponding Word In
The UPM
TCC + 1
—
10
—
8
ns
B38a
CLKOUT Falling Edge To BS Valid–As Requested
By Control Bit BST1 In The Corresponding Word In
The UPM
0.25TC + TCC + 1
10
20
5
13
ns
B38b
CLKOUT Rising Edge To BS Valid–As Requested
By Control Bit BST2 In The Corresponding Word In
The UPM
TCC + 1
—
10
—
8
ns
B38c
CLKOUT Rising Edge To BS Valid–As Requested
By Control Bit BST3 In The Corresponding Word In
The UPM
0.25TC + TCC + 1
10
20
5
13
ns
B39
CLKOUT Falling Edge To GPL Valid–As Requested
By Control Bit GxT4 In The Corresponding Word In
The UPM
TCC + 1
—
10
—
8
ns
B39a
CLKOUT Rising Edge To GPL Valid–As Requested
By Control Bit GxT3 In The Corresponding Word In
The UPM
0.25TC + TCC + 1
10
20
5
13
ns
B40
A(6:31) To CS Valid–As Requested By Control Bit
CST4 In The Corresponding Word In The UPM
8
—
3
—
ns
B40a
A(6:31) To CS Valid–As Requested By Control Bit
CST1 In The Corresponding Word In The UPM
18
—
8
—
ns
B40b
A(6:31) To CS Valid–As Requested By Control Bit
CST2 In The Corresponding Word In The UPM
28
—
13
—
ns
B41
A(6:31) To BS Valid–As Requested By Control Bit
BST4 In The Corresponding Word In The UPM
8
—
3
—
ns
B41a
A(6:31) To BS Valid–As Requested By Control Bit
BST1 In The Corresponding Word In The UPM
18
—
8
—
ns
Table 20-1. Bus Operation Timing (Continued)
NUM
CHARACTERISTIC
EXPRESSION
25 MHZ
40 MHZ
UNIT
MIN
MAX
MIN
MAX