AT89C5131A-L

Manufacturer Part NumberAT89C5131A-L
ManufacturerAtmel Corporation
AT89C5131A-L datasheets
 

Specifications of AT89C5131A-L

Flash (kbytes)32 KbytesMax. Operating Frequency48 MHz
Cpu8051-12CMax I/o Pins34
Usb Transceiver1Usb SpeedFull Speed
Usb InterfaceDeviceSpi1
Twi (i2c)1Uart1
Sram (kbytes)1.25Eeprom (bytes)1024
Self Program MemoryAPIOperating Voltage (vcc)3.0 to 3.6
Timers4IspUART/USB
WatchdogYes  
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DFU Functional
Descriptor
Table 5. DFU Functional Descriptor
Offset
Field
0
bLength
1
bDescriptorType
2
bmAttributes
3
wDetachTimeOut
5
wTransferSize
Command Description
This protocol allows to:
Initiate the communication
Program the Flash or EEPROM Data
Read the Flash or EEPROM Data
Program Configuration Information
Read Configuration and Manufacturer Information
Erase the Flash
Start the application
Overview of the protocol is detailed in Appendix-A.
AT89C5131A USB Bootloader
14
Size
Value
1
07h
Size of this descriptor, in bytes
1
21h
DFU FUNCTIONAL descriptor type
DFU Attributes:
bit 7..3: reserved
bit 2: device is able to communicate via USB after Manifestation
1
Bit mask
phase 1 = yes, 0 = no, must see bus reset
bit 1: bitCanUpload : upload capable 1 = yes, 0 = no
bit 0: bitCanDnload : download capable 1 = yes, 0 = no
Time in milliseconds that the device will wait after receipt of the
DFU_DETACH request.
If this time elapses without a USB reset, the device will terminate the
2
Number
Reconfiguration phase and revert back to normal operation. This
represents the maximum time that the device can wait (depending on
its timers, ...). The Host may specify a shorter timeout in the
DFU_DETACH request.
Maximum number of bytes that the device can accept per control-
2
Number
write transaction
Description
4287E–USB–04/08