AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 162

• 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

USB DC Parameters
162
AT89C5131A-L
Symbol
V
V
V
V
V
V
REF
IHZ
OH
OL
IH
IL
Parameter
USB Reference Voltage
Input High Voltage for D+ and D- (Driven)
Input High Voltage for D+ and D- (Floating)
Input Low Voltage for D+ and D-
Output High Voltage for D+ and D-
Output Low Voltage for D+ and D-
1 - V
2 - D -
3 - D +
4 - GND
Receptacle
USB “B”
BUS
4
3
R = 1.5 kΩ
R
pad
= 27Ω
2
1
R
Rpad
Rpad
Min
3.0
2.0
2.7
2.8
0.0
V
D +
D -
REF
Typ
Max
4338F–USB–08/07
3.6
3.6
0.8
3.6
0.3
Unit
V
V
V
V
V
V