X68C75 Datasheet, PDF (7/26 Pages) Xicor Inc. – Port Expander and E2 Memory

X68C75 SLIC^® E²
Figure 7. On-Chip Registers
7
6
5
4
3
2
1
0
0400
1
0
A15 A14 A13 A12 A11 A10 ^SFRM*
Special Function Register
Memory Map Register
0408 MSB
LSB ^PDRB
Port Data Register B
0410 MSB
LSB ^PDRA
Port Data Register A
0418
INT INTA INTB ENA ENB ENEE 0 EOW ^ISR
Interrupt Status Register
0420 IRST 1 AWO BWO DIRA DIRB STRA STRB CR
Configuration Register
0428 MSB
LSB ^PPRB
Port Pin Register B
0430 MSB
LSB ^PPRA
Port Pin Register A
0438
0 LAM 0 RST A15 A14 A13 ^EEM*
E2 Memory Map Register
0600 _MSB
LSB
16 Bytes General Purpose SRAM
060F MSB
LSB
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.
2899 ILL F07.3C
7