AT89C5132-RORUL Atmel, AT89C5132-RORUL Datasheet - Page 128
AT89C5132-RORUL
Manufacturer Part Number
AT89C5132-RORUL
Description
MCU 8051 FLASH USB 80TQFP
Manufacturer
Atmel
Series
AT89C513xr
Specifications of AT89C5132-RORUL
Core Processor
C52X2
Core Size
8-Bit
Speed
20MHz
Connectivity
IDE/ATAPI, I²C, MMC, PCM, SPI, UART/USART, USB
Peripherals
I²S, POR, WDT
Number Of I /o
44
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.3 V
Data Converters
A/D 2x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP, 80-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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19.3.7
128
AT89C5132
Slave Mode with Interrupt Policy
Figure 19-11. Slave SPI Polling Policy Flows
Figure 19-10 shows the initialization phase and the transfer phase flows using the interrupt
policy.
The transfer format depends on the master controller.
Reading SPSTA at the beginning of the ISR is mandatory for clearing the SPIF flag. Clear is
effective when reading SPDAT.
Program CPOL & CPHA
write data in SPDAT
SPI Initialization
Select Slave Mode
Disable interrupt
Prepare Transfer
Polling Policy
Select Format
Enable SPI
MSTR = 0
SPEN = 1
SPIE = 0
Prepare Next Transfer
Write Data in SPDAT
Get Data Received
Polling Policy
Data Received?
SPI Transfer
Read SPDAT
SPIF = 1?
4173E–USB–09/07
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