AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 13

• 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

DFU Configuration
Descriptor
DFU Interface
Descriptor
4256B–USB–03/06
Table 10. DFU Mode Device Descriptor
This descriptor is identical to the standard configuration descriptor described in the USB DFU
specification version 1.0, with the exception that the bNumInterfaces field must contain the value
01h.
This is the descriptor for the only interface available when operating in DFU mode. Therefore,
the value of the bInterfaceNumber field is always zero.
Table 11. DFU mode Interface Descriptor
Note:
Offset
Offset
10
12
14
15
16
17
0
1
2
4
5
6
7
8
0
1
2
3
4
5
6
7
8
1. Alternate settings can be used by an application to access additional memory segments. In
Field
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
idVendor
idProduct
bcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
Field
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
this case, it is suggested that each alternate setting employs a string descriptor to indicate the
target memory segment; e.g., “EEPROM”. Details concerning other possible uses of alternate
settings are beyond the scope of this document. However, their use is intentionally not
Size
1
1
2
1
1
1
1
2
2
2
1
1
1
1
Size
0x0000
03EBh
2FFFh
0100h
Value
1
1
1
1
1
1
1
1
1
FEh
12h
01h
01h
00h
01h
32
0
0
0
Value
FEh
Description
Size of this descriptor, in bytes
DFU FUNCTIONAL descriptor type
USB specification release number in binary coded decimal
Application Specific Class Code
Device Firmware Upgrade Code
The device does not use a class specific protocol on this
interface
Maximum packet size for endpoint zero
Vendor ID
Product ID
Device release number in binary coded decimal
Index of string descriptor
Index of string descriptor
Index of string descriptor
One configuration only for DFU
09h
04h
00h
00h
00h
01h
00h
00h
Description
Size of this descriptor, in bytes
INTERFACE descriptor type
Number of this interface
Alternate setting
Only the control pipe is used
Application Specific Class Code
Device Firmware Upgrade Code
The device doesn’t use a class specific protocol on
this interface
Index of the String descriptor for this interface
(1)
AT89C5132
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