參數(shù)資料
型號(hào)： X88C75PM
英文描述： Port Expander and E2 Memory
中文描述： 端口擴(kuò)展和E2內(nèi)存
文件頁(yè)數(shù)： 6/27頁(yè)
文件大小： 125K
代理商： X88C75PM
X88C75 SLIC
E
2
6
that accessing the BPR automatically sets the upper
level SDP. If for some reason the user does not want
SDP enabled, they may reset it using the normal reset
command sequence. This will not affect the state of the
BPR and any 1K x 8 blocks that were set to the write
lockout state will remain in the write lockout state.
Figure 4. Block Protect Register Format
Figure 5. Setting BPR Command Sequence
The BPR format and block map are illustrated above.
The command sequence is illustrated to the right.
MSB
LSB
0
1
2
3
4
5
6
7
BLOCK
ADDRESS
0000-03FF
0400-07FF
0800-0BFF
0C00-0FFF
1000-13FF
1400-17FF
1800-1BFF
1C00-1FFF
“1” = Protect, “0” = Unprotect Block Specified
2887 ILL F08.1
AA
b2
P 555
b1 b0
55
b2
AAA
AAA
b1 b0
A0
b2
P 555
b1 b0
AA
b2
P 555
b1 b0
C0
b2
P
2887 ILL F09.1
b1 b0
Write BPR mask value
to any address
Reference the A15–A13
setting in E2M register
P = Address bit (A12) of the
memory plane not being read.
Delay of t
WC
Exit Routine
(BPR Register Set Global SDP Set)
b2 b1 b0
P
Figure 6. Microcontroller Map
0000
1FFF
FFFF
2887 ILL F29.1
RESET/ISR VECTORS
USER
APPLICATION
CODE/DATA
8K BYTES OF BYTE
ALTERABLE DUAL
PLANE ARCHITECTURED
NON-VOLATILE MEMORY
(MAPPABLE TO ANY 8K
PAGE BY THE E2M BITS 2–0)
SRF (SPECIAL FUNCTION
REGISTER) BLOCK
(MAPPABLE TO ANY 1K
PAGE BY THE SFRM
REGISTER)
0030
0150
0000
1F00
1FFF
FC00
FFFF
SLIC
SLIC
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