gc80c521a CORERIVER Semiconductor, gc80c521a Datasheet - Page 18

• Manufacturer Part Number: gc80c521a
• Description: Flash / Isp / Iap 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

ACC
B
PSW
SP
DPTR
P0
P1
P2
P3
IP
IPH
IE
TCON
TMOD
T2CON
T2MOD
TH0
TL0
TH1
TL1
TH2
TL2
RCAP2H
RCAP2L
SCON
SBUF
SADEN
SADDR
PCON
DPL
DPH
Register
6.2. SFR Brief Description
80C52 SFR Registers
Accumulator
B Register
Program Status Word
Stack Pointer
Data Pointer (2 bytes)
Port 0
Port 1
Port 2
Port 3
Interrupt Priority Low
Interrupt Priority High
Interrupt Enable Control
T/C 0/1 Control
T/C 0/1 Mode Control
T/C 2 Control
T/C 2 Mode Selection
T/C 0 High byte
T/C 0 Low byte
T/C 1 High byte
T/C 1 Low byte
T/C 2 High byte
T/C 2 Low byte
T/C 2 Capture Reg. High byte
T/C 2 Capture Reg. Low byte
Serial Control
Serial Buffer
Slave Address Mask Enable
Slave Address
Power Control
Low byte
High byte
Name
Reset Value
00000000
00000000
00000000
00000111
00000000
00000000
11111111
11111111
11111111
11111111
10000000
10000000
00000000
00000000
00000000
00000000
******00
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00*10000
CAUTION : Don’t touch bit *. Updating these bits will cause the malfunctions.
P4
P0SEL
P1SEL
P2SEL
P3SEL
P4SEL
P0DIR
P1DIR
P2DIR
P3DIR
P4DIR
P0TYP
P1TYP
P2TYP
P3TYP
P4TYP
IT
ITSEL
ALTSEL
ALTSEL2
WDCON
CKCON
CKSEL
RINGCON
PMR
EXIF
EIP
EIE
STATUS
OSCICN
OSCICN2
Register
Newly added SFR Registers in MiDAS1.0B Family
Port 4
Port 0 Pull-up Control
Port 1 Pull-up Control
Port 2 Pull-up Control
Port 3 Pull-up Control
Port 4 Pull-up Control
Port 0 Input/Output Control
Port 1 Input/Output Control
Port 2 Input/Output Control
Port 3 Input/Output Control
Port 4 Input/Output Control
Port 0 Type Control
Port 1 Type Control
Port 2 Type Control
Port 3 Type Control
Port 4 Type Control
Interrupt Type
Interrupt Selection
Alternative Pin Selection
Alternative Pin Selection2
Power Flag and Watchdog Timer Control
Watchdog Timer and 4-cycle Switching Control
Clock Selection
RING Calibration Control
Power Management Control
Added External Interrupt and LVD Control
Extended Interrupt Priority
Extended Interrupt Enable
Crystal Status
RING Oscillator Control
RING Oscillator Control2
MiDAS1.0B Family
Name
Reset Value
11111111
11111111
00000000
00000000
00000000
00110000
00000000
00000000
00000000
00000000
00000000
11111111
11111111
11111111
11111111
11111111
****1111
**010100
*****010
*0000000
01010000
111000**
***00011
01111011
****00**
00000101
00000000
00000000
***0****
****1100
*****1**
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