C8051F388-B Datasheet, PDF (90/285 Pages) Silicon Laboratories – Flash MCU Family

C8051F388/9/A/B
SFR Definition 14.1. EMI0CN: External Memory Interface Control
Bit
7
6
5
4
3
2
1
0
Name
PGSEL[7:0]
Type
R/W
Reset
0
0
0
0
0
0
0
0
SFR Address = 0xAA; SFR Page = All Pages
Bit
Name
Function
7:0 PGSEL[7:0] XRAM Page Select Bits.
The XRAM Page Select Bits provide the high byte of the 16-bit external data mem-
ory address when using an 8-bit MOVX command, effectively selecting a 256-byte
page of RAM.
0x00: 0x0000 to 0x00FF
0x01: 0x0100 to 0x01FF
...
0xFE: 0xFE00 to 0xFEFF
0xFF: 0xFF00 to 0xFFFF
90
Rev. 1.1