AT89C5131A-PLTUL Atmel, AT89C5131A-PLTUL Datasheet - Page 149

• Manufacturer Part Number: AT89C5131A-PLTUL
• Description: IC MCU 32KB 3-3.6V USB 48-VQFN
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131A-PLTUL

• 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: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• 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: -

Reset Output
4338F–USB–08/07
As detailed in Section “Hardware Watchdog Timer”, page 155, the WDT generates a 96-
clock period pulse on the RST pin. In order to properly propagate this pulse to the rest of
the application in case of external capacitor or power-supply supervisor circuit, a 1 kΩ
resistor must be added as shown Figure 74.
Figure 74. Recommended Reset Output Schematic
VDD
VSS
VSS
+
RST
1K
RST
AT89C5131A-M
To other
on-board
circuitry
149