AT89C5132-RORUL Atmel, AT89C5132-RORUL Datasheet - Page 125
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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19.3.1
19.3.2
19.3.3
19.3.4
4173E–USB–09/07
Master Configuration
Slave Configuration
Data Exchange
Master Mode with Polling Policy
The SPI operates in master mode when the MSTR bit in SPCON is set.
The SPI operates in slave mode when the MSTR bit in SPCON is cleared and data has been
loaded in SPDAT.
There are two possible Policies to exchange data in master and slave modes:
•
•
Figure 19-9 shows the initialization phase and the transfer phase flows using the polling policy.
Using this flow prevents any overrun error occurrence.
•
•
•
•
This policy provides the fastest effective transmission and is well adapted when communicating
at high speed with other Microcontrollers. However, the procedure may then be interrupted at
any time by higher priority tasks.
polling
interrupts
The bit rate is selected according to Table 97.
The transfer format depends on the slave peripheral.
SS may be deasserted between transfers depending also on the slave peripheral.
SPIF flag is cleared when reading SPDAT (SPSTA has been read before by the “end of
transfer” check).
AT89C5132
125
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