C8051F120 Datasheet, PDF (221/356 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
R/W
PGSEL7
Bit7
R/W
PGSEL6
Bit6
R/W
PGSEL5
Bit5
R/W
PGSEL4
Bit4
R/W
PGSEL3
Bit3
R/W
PGSEL2
Bit2
R/W
R/W Reset Value
PGSEL1 PGSEL0 00000000
Bit1
Bit0
SFR Address: 0xA2
SFR Page: 0
Bits7-0:
PGSEL[7:0]: XRAM Page Select Bits.
The XRAM Page Select Bits provide the high byte of the 16-bit external data memory
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
Figure 17.1. EMI0CN: External Memory Interface Control
Rev. 1.3
223