UPSD3313D-40U6T datasheet(99/231 Pages) STMICROELECTRONICS

No. de pieza	UPSD3313D-40U6T

Descripción Electrónicos	Fast 8032 MCU with Programmable Logic

PDF	231 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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uPSD33xx

Serial I/O Engine (SIOE)

At the heart of the I2C interface is the hardware

SIOE, shown in Figure 40. The SIOE automatically

handles low-level I2C bus protocol (data shifting,

handshaking, arbitration, clock generation and

synchronization) and it is controlled and monitored

by five SFRs.

The five SFRs shown in Figure 40 are:

■

S1CON - Interface Control (Table

50., page 100)

■

S1STA - Interface Status (Table

52., page 103)

■

S1DAT - Data Shift Register (Table

53., page 104)

■

S1ADR - Device Address (Table

54., page 104)

■

S1SETUP - Sampling Rate (Table

55., page 105)

Figure 40. I2C Interface SIOE Block Diagram

Open-

Drain

Output

Input

Open-

Drain

Output

Input

Comparator

S1SETUP - Sample Rate

Control (START Condition)

S1STA - Interface Status

S1CON - Interface Control

ACK

Bit

SCL / P3.7

Timing and

Control

Clock

Generation

Arbitration

and Sync

Periph

Clock

(fOSC)

SDA / P3.6

INTR to 8032

S1DAT - Shift Register

Serial DATA IN

Serial DATA OUT

Shift Direction

S1ADR - Device Address

AI09626

UPSD3313D-40U6T Datasheet(PDF) 99 Page - STMicroelectronics

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