AT89C5130A-M Atmel Corporation, AT89C5130A-M Datasheet - Page 101
AT89C5130A-M
Manufacturer Part Number
AT89C5130A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5130A-M
Flash (kbytes)
16 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
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19.3.5.3
4337K–USB–04/08
Serial Peripheral Data Register (SPDAT)
Reset Value = 00X0 XXXXb
Not Bit addressable
The Serial Peripheral Data Register
ter. 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 19-5.
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 transmis-
sion is on-going:
Bit Number
• 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
4
3
2
1
0
7
Mnemonic
SPDAT Register
MODF
Bit
R6
-
-
-
-
6
Description
Mode Fault
Cleared by hardware to indicate that the SS pin is at appropriate logic level, or has been
approved by a clearing sequence.
Set by hardware to indicate that the SS pin is at inappropriate logic level.
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.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
R5
5
(Table
R4
4
19-5) is a read/write buffer for the receive data regis-
R3
3
AT89C5130A/31A-M
R2
2
R1
1
R0
0
101
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