C8051F340 Datasheet, PDF (120/282 Pages) List of Unclassifed Manufacturers – Full Speed USB Flash MCU Family

C8051F340/1/2/3/4/5/6/7
SFR Definition 13.1. EMI0CN: External Memory Interface Control
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: 0xAA
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
120
Rev. 0.5