AT89C5122D-PSTUM Atmel, AT89C5122D-PSTUM Datasheet - Page 173
AT89C5122D-PSTUM
Manufacturer Part Number
AT89C5122D-PSTUM
Description
IC 8051 MCU FLASH 32K 64QFN
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C5122D-PSTUM.pdf
(208 pages)
Specifications of AT89C5122D-PSTUM
Core Processor
8051
Core Size
8-Bit
Speed
48MHz
Connectivity
SmartCard, SPI, UART/USART, USB
Peripherals
LED, POR, WDT
Number Of I /o
46
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFN
For Use With
AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
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Reset pin
Long Reset
Reset Controlled by the User
4202F–SCR–07/2008
As explained in the POR section there is no need to use the reset pin as the internal
reset function at power up is ensured by the POR. Anyway, if some applications
requires a long reset, a reset controlled by the user or a reset controlled by external
superviser device, the use of the reset pin is necessary.
As the pad integrates an internal pull-up of 10K, only an external capacitor of at least 10
μF is required to have an impact on the reset duration.
Figure 103. Long Reset
The external capacitor is not needed if no long reset is required.
Figure 104. Reset Controlled by the User
10 μF
RST
RST
Vcc
Vcc
10 K
10 K
AT83R5122, AT8xC5122/23
Microcontrolleur
Microcontrolleur
Internal Reset
Internal Reset
173
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