參數(shù)資料
型號(hào)： X88C75
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)： 7/27頁(yè)
文件大?。?/td> 125K
代理商： X88C75
X88C75 SLIC
E
2
7
Figure 7. On-Chip Registers
Programmable Address Decoding
The X88C75 features an internal programmable ad-
dress decoder which allows the nonvolatile memory
array and the internal registers to be mapped in various
locations of the 64K-byte memory map. The register set
is mappable into a 1K-byte block, while the nonvolatile
memory array is mappable into an 8K-byte block. The
mapping is controlled by two nonvolatile configuration
registers, the SFR Map Register and the E
2
Memory
Map Register. Their bits are mapped as follows:
SFR Map Register (SFRM)
Default = 3F
0
0
A15
A14
A13
A12
A11
A10
7
6
2887 ILL F10
5
4
3
2
1
0
A15-A10
The A15-A10 are upper address bits for the 1K-byte
page where the SFR memory is mapped.
0
2887 ILL F30.2
0
LAM
0
RST
A15
A14
A13
7
6
5
4
3
2
1
0
FC38
EEM*
E
2
Memory Map Register
MSB
LSB
FC08
PDRB
Port Data Register B
MSB
LSB
FC10
PDRA
Port Data Register A
INT
INTA INTB
ENA
ENB ENEE
0
EOW
FC18
ISR
Interrupt Status Register
IRST
1
AWO BWO DIRA DIRB STRA STRB
FC20
CR
Configuration Register
MSB
LSB
FC28
PPRB
Port Pin Register B
MSB
LSB
FC30
PPRA
Port Pin Register A
Special Function Register
Memory Map Register
0
NOTE: * The value returned by reading these registers is the complement of the
actual data. These registers are nonvolatile and a special SDP sequence
is used to alter their contents. All the other registers are initialized by a
valid reset input signal and when the device is power cycled.
0
A15
A14
A13
A12
A11
A10
FC00
SFRM*
FE00
FE0F
16 Bytes General Purpose SRAM
MSB
LSB
MSB
LSB
相關(guān)PDF資料
PDF描述
X88C75J Port Expander and E2 Memory
X88C75JI Port Expander and E2 Memory
X88C75JM Port Expander and E2 Memory
X88C75L Port Expander and E2 Memory
X88C75LI Port Expander and E2 Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
X88C75J 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75JI 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75JISLIC 制造商:Intersil Corporation 功能描述:I/O PORT, 44 Pin, Plastic, PLCC
X88C75JM 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75L 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
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