AT89C5131A-RDTIL Atmel, AT89C5131A-RDTIL Datasheet - Page 133
AT89C5131A-RDTIL
Manufacturer Part Number
AT89C5131A-RDTIL
Description
IC 8051 MCU FLASH 32K USB 64VQFP
Manufacturer
Atmel
Series
AT89C513xr
Specifications of AT89C5131A-RDTIL
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
64-TQFP, 64-VQFP
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
-
Other names
AT89C5131-RDTIL
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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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
133
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