AT89C5131-S3SIL Atmel, AT89C5131-S3SIL Datasheet - Page 131

• Manufacturer Part Number: AT89C5131-S3SIL
• Description: IC 8051 MCU FLASH 32K USB 52PLCC
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131-S3SIL

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Detach Simulation
Figure 66. Disconnect Timing
USB Interrupt System
Interrupt System Priorities
4136B–USB–09/03
D+
D-
V
IHZ
(min)
V
V
SS
IL
Controller
USB
D+
D-
Disconnected
In order to be re-enumerated by the Host, the AT89C5131 has the possibility to simulate
a DETACH - ATTACH of the USB bus.
The V
D+ pull-up as shown in Figure 65. This output can be put in high-impedance when the
DETACH bit is set to 1 in the USBCON register. Maintaining this output in high imped-
ance for more than 3 µs will simulate the disconnection of the device. When resetting
the DETACH bit, an attach is then simulated.
Figure 65. Example of V
Figure 67. USB Interrupt Control System
Device
REF
output voltage is between 3.0V and 3.6V. This output can be connected to the
EUSB
IE1.6
Interrupt Enable
AT89C5131
> = 2,5 s
REF
IE0.7
EA
Connection
V
REF
D-
D+
Disconnect
Detected
Priority Enable
IPH/L
1.5 k
00
01
10
11
Lowest Priority Interrupts
1
2
3
4
USB-B Connector
V
D-
D+
GND
CC
AT89C5131
131