UPSD33XX Datasheet, PDF (23/231 Pages) STMicroelectronics – Fast 8032 MCU with Programmable Logic

uPSD33xx
SPECIAL FUNCTION REGISTERS (SFR)
A group of registers designated as Special Func-
tion Register (SFR) is shown in Table 5., page 24. _■
SFRs control the operating modes of the MCU
core and also control the peripheral interfaces and
I/O pins on the MCU Module. The SFRs can be ac- ^■
cessed only by using the Direct Addressing meth-
od within the address range from 80h to FFh of _■
internal 8032 SRAM. Sixteen addresses in SFR
address space are both byte- and bit-addressable.
The bit-addressable SFRs are noted in Table 5.
■
86 of a possible 128 SFR addresses are occupied.
The remaining unoccupied SFR addresses (desig-
nated as “RESERVED” in Table 5) should not be
written. Reading unoccupied locations will return
an undefined value.
■
Note: There is a separate set of control registers
for the PSD Module, designated as csiop, and they
are described in the PSD MODULE, page 133.
The I/O pins, PLD, and other functions on the PSD
Module are NOT controlled by SFRs.
SFRs are categorized as follows:
■ MCU core registers:
IP, A, B, PSW, SP, DPTL, DPTH, DPTC,
■
DPTM
■ MCU Module I/O Port registers:
P1, P3, P4, P1SFS0, P1SFS1, P3SFS,
■
P4SFS0, P4SFS1
■ Standard 8032 Timer registers
■
TCON, TMOD, T2CON, TH0, TH1, TH2, TL0,
TL1, TL2, RCAP2L, RCAP2H
■
■ Standard Serial Interfaces (UART)
SCON0, SBUF0, SCON1, SBUF1
Power, clock, and bus timing registers
PCON, CCON0, BUSCON
Hardware watchdog timer registers
WDKEY, WDRST
Interrupt system registers
IP, IPA, IE, IEA
Prog. Counter Array (PCA) control
registers
PCACL0, PCACH0, PCACON0, PCASTA,
PCACL1, PCACH1, PCACON1, CCON2,
CCON3
PCA capture/compare and PWM registers
CAPCOML0, CAPCOMH0, TCMMODE0,
CAPCOML1, CAPCOMH1, TCMMODE2,
CAPCOML2, CAPCOMH2, TCMMODE2,
CAPCOML3, CAPCOMH3, TCMMODE3,
CAPCOML4, CAPCOMH4, TCMMODE4,
CAPCOML5, CAPCOMH5, TCMMODE5,
PWMF0, PMWF1
SPI interface registers
SPICLKD, SPISTAT, SPITDR, SPIRDR,
SPICON0, SPICON1
I²C interface registers
S1SETUP, S1CON, S1STA, S1DAT, S1ADR
Analog to Digital Converter registers
ACON, ADCPS, ADAT0, ADAT1
IrDA interface register
IRDACON
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