UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 115

• Manufacturer Part Number: UPSD3433EB40U6
• Description: MCU 8BIT 8032 128KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3433EB40U6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5518 - EVAL BOARD RFID READER497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-5660

uPSD34xx
23
23.1
Note:
1
I
uPSD34xx devices support one serial I
channel, having a bi-directional data signal (SDA, pin P3.6) and a clock signal (SCL, pin
P3.7) based on open-drain line drivers, requiring external pull-up resistors, R
typical value of 4.7kΩ (see
I
Byte-wide data is transferred, MSB first, between a Master device and a Slave device on two
wires. More than one bus Master is allowed, but only one Master may control the bus at any
given time. Data is not lost when another Master requests the use of a busy bus because
I
and generates the clock that permits the transfer. Once a transfer is initiated by the Master,
any device addressed is considered a Slave. Automatic clock synchronization allows I
devices with different bit rates to communicate on the same physical bus. A single device
can play the role of Master or Slave, or a single device can be a Slave only. Each Slave
device on the bus has a unique address, and a general broadcast address is also available.
A Master or Slave device has the ability to suspend data transfers if the device needs more
time to transmit or receive data.
This I
●
●
●
●
●
Figure 41. Typical I
For 3.3V system, connect R
2
2
2
C supports collision detection and arbitration. The bus Master initiates all data movement
C interface main features
I 2 C BUS
C interface
Serial I/O Engine (SIOE): serial/parallel conversion; bus arbitration; clock generation
and synchronization; and handshaking are all performed in hardware
Interrupt or Polled operation
Multi-master capability
7-bit Addressing
Supports standard speed I
and high-speed mode I
2
C interface has the following features:
SDA
SCL
SDA/P3.6 SCL/P3.7
uPSD34XX(V)
V CC or V DD (1)
2
C bus configuration
Figure
P
2
C (401KHz to 833kHz)
to 3.3V V
R P
2
C (SCL up to 100kHz), fast mode I
41).
R P
2
CC
C interface. This is a two-wire communication
. For 5.0V system, connect R
Device with I 2 C
Interface
Device with I 2 C
Interface
2
C (101KHz to 400kHz),
P
Device with I 2 C
to 5.0V V
Interface
P
, each with a
I
2
C interface
DD
AI09623b
115/293
.
2
C