AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 21

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

Programming
Configuration
Information
Request from Host
Answers from
Bootloader
4256B–USB–03/06
The flow described below allows the user to program Configuration Information regarding the
bootloader functionality.
•
Ensure that the Program Fuse bit command programs the 4 Fuse bits at the same time.
To start the programming operation, the Host sends DFU_DNLOAD request with the Write com-
mand in the data field (6 bytes).
The device has two possible answers to a DFU_GETSTATUS request:
•
•
Command Identifier
Id_write_command
Boot Process Configuration:
–
–
–
If the chip is protected from program access, a “err_WRITE” status is returned to the Host.
Otherwise, the device status is “OK“.
BSB
SBV
Fuse bits (BLJB, X2B) (see Section “Mapping and Default Value of Hardware
Security Byte”, page 3).
04h
data[0]
01h
02h
SETUP
OUT
IN
data[1]
00h
01h
05h
06h
00h
data[2]
Value
Value
Write_command (6 bytes)
DFU_DNLOAD
ZLP
data[3]
data[4]
Write value in BSB
Write value in SBV
Write value in SSB
Write value in EB
Write value in Fuse (HSB)
AT89C5132
Description
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