STC micro STC8A8K64D4 Series Reference Manual page 229

STC8A8K64D4 Series Manual
hidden interrupt request flag is set to 1, and request an interrupt and wait, it is mistakenly cleared by the user.
This is different from the traditional INTEL8048, 8051, but INTEL has been discontinued, so the new design of STC does
not consider the specifications compatible with traditional INTEL.
This is the further development of 8051 by China STC.
UARTs Control Registers
Symbol Address
SCON 98H
S2CON 9AH
S3CON ACH
S4CON 84H
TI: Transmit interrupt flag of UART1, which must be cleared by software.
RI: Receive interrupt flag of UART1, which must be cleared by software.
S2TI: Transmit interrupt flag of UART2, which must be cleared by software.
S2RI: Receive interrupt flag of UART2, which must be cleared by software.
S3TI: Transmit interrupt flag of UART3, which must be cleared by software.
S3RI: Receive interrupt flag of UART3, which must be cleared by software.
S4TI: Transmit interrupt flag of UART4, which must be cleared by software.
S4RI: Receive interrupt flag of UART4, which must be cleared by software.
Power Control Register
Symbol Address
PCON 87H
LVDF: Low voltage detection interrupt flag, which must be cleared by software.
ADC Control Register
Symbol Address
ADC_CONTR BCH
ADC_FLAG: ADC completes conversion interrupt request flag, which must be cleared by software.
SPI Status Register
Symbol Address
SPSTAT CDH
SPIF: SPI transmission completion interrupt request flag, which must be cleared by software.
PCA Control Register
Symbol Address
CCON D8H
CF: PCA counter interrupt request flag, which must be cleared by software.
CCF3: PCA module 3 interrupt request flag, which must be cleared by software.
CCF2: PCA module 2 interrupt request flag, which must be cleared by software.
CCF1: PCA module 1 interrupt request flag, which must be cleared by software.
CCF0: PCA module 0 interrupt request flag, which must be cleared by software.
Comparator Control Register 1
Symbol Address
CMPCR1 E6H
CMPIF: Comparator interrupt request flag, which must be cleared by software.
I2C Status Registers
Symbol Address
I2CMSST FE82H
I2CSLST FE84H
2
MSIF: I C master mode interrupt request flag, which must be cleared by software.
2
ESTAI: I C slave receives the START event interrupt request flag, which must be cleared by software.
B7 B6
SM0/FE SM1
S2SM0 -
S3SM0 S3ST3
S4SM0 S4ST4
B7 B6
SMOD SMOD0
B7 B6
ADC_POWER ADC_START
B7 B6
SPIF WCOL
B7 B6
CF CR
B7 B6
CMPEN CMPIF
B7 B6
MSBUSY MSIF
SLBUSY STAIF RXIF
B5 B4
SM2 REN
S2SM2 S2REN
S3SM2 S3REN
S4SM2 S4REN
B5 B4
LVDF POF
B5
ADC_FLAG ADC_EPWMT
B5 B4
- -
B5 B4
- -
B5 B4
PIE NIE
B5 B4 B3
- - -
TXIF STOIF
-
B3 B2
TB8 RB8
S2TB8 S2RB8
S3TB8 S3RB8
S4TB8 S4RB8
B3 B2
GF1 GF0
B4 B3
ADC_CHS[3:0]
B3 B2
- -
B3 B2
CCF3 CCF2
B3 B2
PIS NIS CMPOE
B2
- MSACKI
TXING SLACKI
B1 B0
TI RI
S2TI S2RI
S3TI S3RI
S4TI S4RI
B1 B0
PD IDL
B2 B1 B0
B1 B0
- -
B1 B0
CCF1 CCF0
B1 B0
CMPRES
B1 B0
MSACKO
SLACKO
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