AT89C5131A-S3SUL Atmel, AT89C5131A-S3SUL Datasheet - Page 133

• Manufacturer Part Number: AT89C5131A-S3SUL
• Description: MCU 8051 32K FLASH USB 52-PLCC
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131A-S3SUL

• 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
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: 2-Wire, EUART, SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 3 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89STK-05
• Minimum Operating Temperature: - 40 C
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Detach Simulation
Figure 69. Disconnect Timing
USB Interrupt System
Interrupt System Priorities
4338F–USB–08/07
D+
D-
V
IHZ
(min)
V
V
IL
SS
Controller
USB
D+
D-
Disconnected
In order to be re-enumerated by the Host, the AT89C5131A-L has the possibility to sim-
ulate a DETACH - ATTACH of the USB bus.
The V
D+ pull-up as shown in Figure 68. 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 68. Example of V
Figure 70. 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 µs
REF
IE0.7
EA
Connection
V
REF
D-
D+
Disconnect
Detected
Priority Enable
IPH/L
1.5 kΩ
00
01
10
11
Lowest Priority Interrupts
1
2
3
4
USB-B Connector
V
D-
D+
GND
CC
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