AT89C5131-TISIL Atmel, AT89C5131-TISIL Datasheet - Page 91
AT89C5131-TISIL
Manufacturer Part Number
AT89C5131-TISIL
Description
IC 8051 MCU FLASH 32K USB 28SOIC
Manufacturer
Atmel
Series
AT89C513xr
Datasheet
1.AT89C5131-S3SIL.pdf
(176 pages)
Specifications of AT89C5131-TISIL
Core Processor
C52X2
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
LED, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
For Use With
AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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Functional Description
Operating Modes
4136B–USB–09/03
Figure 40 shows a detailed structure of the SPI module.
Figure 40. SPI Module Block Diagram
The Serial Peripheral Interface can be configured as one of the two modes: Master
mode or Slave mode. The configuration and initialization of the SPI module is made
through one register:
•
Once the SPI is configured, the data exchange is made using:
•
•
•
During an SPI transmission, data is simultaneously transmitted (shifted out serially) and
received (shifted in serially). A serial clock line (SCK) synchronizes shifting and sam-
pling on the two serial data lines (MOSI and MISO). A Slave Select line (SS) allows
individual selection of a Slave SPI device; Slave devices that are not selected do not
interfere with SPI bus activities.
When the Master device transmits data to the Slave device via the MOSI line, the Slave
device responds by sending data to the Master device via the MISO line. This implies
full-duplex transmission with both data out and data in synchronized with the same clock
(Figure 41).
SPI Interrupt Request
The Serial Peripheral CONtrol register (SPCON)
SPCON
The Serial Peripheral STAtus register (SPSTA)
The Serial Peripheral DATa register (SPDAT)
Clock
Divider
FCLK PERIPH
SPR2
/128
/32
/64
/16
SPEN
/8
/4
Clock
Select
SSDIS
MSTR
SPIF
Receive Data Register
CPOL
WCOL
7
Shift Register
Internal Bus
6
SPI
Control
CPHA
5
SSERR
4
3
SPR1
2
Clock
Logic
SPCON
1
SPDAT
MODF
0
SPR0
-
M
Pin
Control
Logic
S
AT89C5131
-
-
SPSTA
-
8-bit bus
1-bit signal
MOSI
MISO
SCK
SS
91
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