AT89C5131A-TISIL Atmel, AT89C5131A-TISIL Datasheet - Page 98
![IC 8051 MCU FLASH 32K USB 28SOIC](/photos/6/82/68295/453-28-soic_sml.jpg)
AT89C5131A-TISIL
Manufacturer Part Number
AT89C5131A-TISIL
Description
IC 8051 MCU FLASH 32K USB 28SOIC
Manufacturer
Atmel
Series
AT89C513xr
Specifications of AT89C5131A-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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Serial Peripheral Data Register
(SPDAT)
98
AT89C5131A-L
Reset Value = 00X0 XXXXb
Not Bit addressable
The Serial Peripheral Data Register (Table 76) is a read/write buffer for the receive data
register. A write to SPDAT places data directly into the shift register. No transmit buffer is
available in this model.
A Read of the SPDAT returns the value located in the receive buffer and not the content
of the shift register.
Table 76. SPDAT Register
SPDAT - Serial Peripheral Data Register (0C5H)
Reset Value = Indeterminate
R7:R0: Receive data bits
SPCON, SPSTA and SPDAT registers may be read and written at any time while there
is no on-going exchange. However, special care should be taken when writing to them
while a transmission is on-going:
•
•
•
•
•
Number
Bit
Do not change SPR2, SPR1 and SPR0
Do not change CPHA and CPOL
Do not change MSTR
Clearing SPEN would immediately disable the peripheral
Writing to the SPDAT will cause an overflow
R7
7
2
1
0
Mnemonic Description
Bit
R6
6
-
-
-
Reserved
The value read from this bit is indeterminate. Do not set this bit
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
R5
5
R4
4
Table 2.
R3
3
R2
2
R1
1
4338F–USB–08/07
R0
0
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