AT89C51CC03CA-RLTUM Atmel, AT89C51CC03CA-RLTUM Datasheet - Page 31

• Manufacturer Part Number: AT89C51CC03CA-RLTUM
• Description: IC 8051 MCU 64K FLASH 44-VQFP
• Manufacturer: Atmel
• Series: AT89C CANr

Specifications of AT89C51CC03CA-RLTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2304 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 2
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 44VQFP
• Device Core: 8051
• Family Name: AT89
• Maximum Speed: 60 MHz
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Reset
Introduction
Reset Input
4182O–CAN–09/08
The reset sources are : Power Management, Hardware Watchdog, PCA Watchdog and
Reset input.
Figure 16. Reset Schematic
The Reset input can be used to force a reset pulse longer than the internal reset con-
trolled by the Power Monitor. RST input has a pull-down resistor allowing power-on
reset by simply connecting an external capacitor to V
value and input characteristics are discussed in the Section “DC Characteristics” of the
AT89C51CC03 datasheet. The status of the Port pins during reset is detailed in Table 9.
Figure 17. Reset Circuitry and Power-On Reset
RST
RST
a. RST input circuitry
VSS
Watchdog
Watchdog
Hardware
Monitor
Power
PCA
To internal reset
CC
as shown in Figure 17. Resistor
AT89C51CC03
b. Power-on Reset
VDD
+
Internal Reset
RST
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