UPSD3313D-40T6 datasheet(23/231 Pages) STMICROELECTRONICS

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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

UPSD3313D-40T6 Datasheet(PDF) 23 Page - STMicroelectronics

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