UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 33

• Manufacturer Part Number: UPSD3254
• Description: Flash Programmable System Devices with 8032 Microcontroller Core
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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
– On-chip Oscillator
Table 15. SFR Memory Map
Note: 1. Register can be bit addressing
2
D8
D0
C8
C0
C Bus
F8
F0
E8
E0
B8
B0
A8
A0
98
90
88
80
S1CON
T2CON
UISTA
TCON
PSW
ACC
SCON
P4
P3
P2
P1
P0
IP
IE
B
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
PWMCON
S1SETUP
PSCL0L
T2MOD
P1SFS
S1STA
TMOD
USCL
SBUF
UIEN
SP
S2SETUP
RCAP2L
PSCL0H
PWM4P
UCON0
SCON2
S1DAT
PWM0
DPL
TL0
UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
RCAP2H
PWM4W
PSCL1L
UCON1
S1ADR
SBUF2
P3SFS
PWM1
DPH
TL1
– ADC
– I/O Ports
– USB
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.
RAMBUF
PSCL1H
UCON2
S2CON
P4SFS
PWM2
TH0
TL2
DDCDAT
S2STA
PWM3
USTA
ASCL
TH2
TH1
DDCADR DDCCON
WDKEY
WDRST
S2DAT
UADR
UDT1
ADAT
S2ADR
ACON
PCON
UDR0
UDT0
IPA
IEA
33/175
DF
CF
FF
EF
E7
D7
C7
BF
B7
AF
A7
F7
9F
97
8F
87