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MCU MODULE DISCRIPTION
This section provides a detail description of the
MCU Module system functions and Peripherals,
including:
■ Special Function Registers
■ Timers/Counter
■ Interrupts
■ PWM
■ Supervisory Function (LVD and Watchdog)
■ USART
■ Power Saving Modes
■ I
2
C Bus
■ On-chip Oscillator
■ ADC
■ I/O Ports
Special Function Registers
A map of the on-chip memory area called the Spe-
cial Function Register (SFR) space is shown in Ta-
ble 15.
Note: In the SFRs not all of the addresses are oc-
cupied. Unoccupied addresses are not implement-
ed on the chip. READ accesses to these
addresses will in general return random data, and
WRITE accesses will have no effect. User soft-
ware should write '0s' to these unimplemented lo-
cations.
Table 15. SFR Memory Map
Note: 1. Register can be bit addressing
F8 FF
F0
B
(1)
F7
E8
UISTA
(1)
UIEN UCON0 UCON1 UCON2 USTA UADR UDR0 EF
E0
ACC
(1)
USCL UDT1 UDT0 E7
D8 S2CON S2STA S2DAT S2ADR DF
D0
PSW
(1)
D7
C8
T2CON
(1)
T2MOD RCAP2L RCAP2H TL2 TH2 CF
C0
P4
(1)
C7
B8
IP
(1)
BF
B0
P3
(1)
PSCL0L PSCL0H PSCL1L PSCL1H IPA B7
A8
IE
(1)
PWM4P PWM4W WDKEY AF
A0
P2
(1)
PWMCON PWM0 PWM1 PWM2 PWM3 WDRST IEA A7
98 SCON SBUF SCON2 SBUF2 9F
90
P1
(1)
P1SFS P3SFS P4SFS ASCL ADAT ACON 97
88
TCON
(1)
TMOD TL0 TL1 TH0 TH1 8F
80
P0
(1)
SP DPL DPH PCON 87