AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 176

• 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

176
AT89C5131A-L
(CPOL= 0)
(CPOL= 1)
(CPOL= 0)
(CPOL= 1)
(output)
(output)
(output)
(output)
(input)
(output)
(output)
(output)
(output)
MOSI
MISO
SCK
SCK
(input)
MOSI
MISO
SS
SS
SCK
SCK
Figure 86. SPI Master Waveforms (SSCPHA= 0)
Note:
Figure 87. SPI Master Waveforms (SSCPHA= 1)
SS
(1)
handled by software using general purpose port pin.
Port Data
1.
Port Data
SS
T
handled by software using general purpose port pin.
T
IVCH
IVCL
MSB IN
MSB OUT
T
T
T
CHIX
CLIX
CHCX
T
CHCX
T
T
T
IVCH
IVCL
MSB IN
CHCH
T
MSB OUT
T
T
CHCH
T
CLOV
CHOV
CLCX
T
T
T
CHIX
CLIX
CLCX
BIT 6
T
T
CLOV
CHOV
BIT 6
BIT 6
T
T
CLOX
CHOX
BIT 6
LSB IN
LSB OUT
T
T
CLCH
CHCL
T
T
CLCH
CHCL
LSB IN
LSB OUT
T
T
Port Data
CLOX
CHOX
Port Data
4338F–USB–08/07