UPSD3454E-40T6 STMicroelectronics, UPSD3454E-40T6 Datasheet - Page 137
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UPSD3454E-40T6
Manufacturer Part Number
UPSD3454E-40T6
Description
MCU 8BIT 8032 256K FLASH 52-TQFP
Manufacturer
STMicroelectronics
Series
µPSDr
Datasheet
1.UPSD3422EV-40U6.pdf
(300 pages)
Specifications of UPSD3454E-40T6
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
35
Program Memory Size
288KB (288K x 8)
Program Memory Type
FLASH
Ram Size
32K 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
52-TQFP, 52-VQFP
For Use With
497-5518 - EVAL BOARD RFID READER
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPSD3454E-40T6
Manufacturer:
STMicroelectronics
Quantity:
10 000
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UPSD3422, UPSD3433, UPSD3434, UPSD3454
Enable I2C SIOE
Transmit Address and R/W bit = 1 to Slave
Enable All Interrupts and go do something else
Slave-Transmitter
Disable all interrupts
Set pointer to global data xmit buffer, set count
Set global variables to indicate Master-Xmitter
Enable SIOE
Prepare to Xmit first data byte
Enable All Interrupts and go do something else
Slave-Receiver
Disable all interrupts
Set pointer to global data recv buffer, set count
Set global variables to indicate Master-Xmitter
Enable SIOE
Enable All Interrupts and go do something else
–
–
<If busy, then test until not busy>
–
–
<bus transmission begins>
–
–
–
–
–
–
–
–
–
–
–
–
–
–
SFR S1CON.INI1 = 1
Is bus not busy? (SFR S1STA.BBUSY = 0?)
SFR S1DAT[7:0] = Load Slave Address # 01h
SFR S1CON.STA = 1, send Start on bus
SFR IE.EA = 1
SFR IE.EA = 0
*xmit_buf = *pointer to data
buf_length = number of bytes to xmit
I2C_master = 0, I2C_xmitter = 1
SFR S1CON.INI1 = 1
SFR S1DAT[7:0] = xmit_buf[0]
SFR IE.EA = 1
SFR IE.EA = 0
*recv_buf = *pointer to data
buf_length = number of bytes to recv
I2C_master = 0, I2C_xmitter = 0
SFR S1CON.INI1 = 1
SFR IE.EA = 1
I
2
C interface
137/300
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