AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 175

• Manufacturer Part Number: AT89C5131A-L
• Manufacturer: Atmel Corporation

Specifications of AT89C5131A-L

• Flash (kbytes): 32 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): 3.0 to 3.6
• Timers: 4
• Isp: UART/USB
• Watchdog: Yes

Waveforms
4338F–USB–08/07
(CPOL= 0)
(CPOL= 1)
(CPOL= 0)
(CPOL= 1)
(output)
(input)
(input)
(input)
(input)
MISO
MOSI
(output)
SCK
SCK
(input)
(input)
(input)
(input)
MISO
MOSI
SS
SCK
SCK
Figure 84. SPI Slave Waveforms (CPHA= 0)
Note:
Figure 85. SPI Slave Waveforms (CPHA= 1)
Note:
SS
1. Not Defined but generally the MSB of the character which has just been received.
1. Not Defined but generally the LSB of the character which has just been received.
T
T
SLCH
SLCL
T
T
SLAVE MSB OUT
SLCH
T
SLCL
T
(1)
IVCH
T
IVCL
MSB IN
SLOV
T
SLOV
T
CHCX
T
T
SLAVE MSB OUT
T
T
T
CHIX
CLIX
CHCX
IVCH
IVCL
MSB IN
T
CHCH
T
CHCH
T
T
T
CHIX
CLIX
CLCX
T
CLCX
BIT 6
T
T
CHOV
CLOV
BIT 6
BIT 6
T
T
CHOV
CLOV
BIT 6
SLAVE LSB OUT
LSB IN
T
T
CLOX
CHOX
T
T
SLAVE LSB OUT
CLCH
CHCL
T
T
LSB IN
CLCH
CHCL
T
T
CHOX
CLOX
T
T
CLSH
CHSH
T
T
CLSH
CHSH
(1)
T
SHSL
T
SHSL
T
SHOX
T
SHOX
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