AT89C51AC3-RDTUM Atmel, AT89C51AC3-RDTUM Datasheet - Page 34

• Manufacturer Part Number: AT89C51AC3-RDTUM
• Description: IC 8051 MCU FLASH 64K 64VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51AC3-RDTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, 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: 64-TQFP, 64-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: 3
• 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
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Registers
34
AT89C51AC3
Table 10. PCON Register
PCON (S87:h) Power configuration Register
Reset Value= XXXX 0000b
Number
Bit
7-4
7
-
3
2
1
0
Mnemonic Description
GF1
GF0
Bit
IDL
PD
6
-
-
Reserved
The value read from these bits is indeterminate. Do not set these bits.
General Purpose flag 1
One use is to indicate whether an interrupt occurred during normal operation or
during Idle mode.
General Purpose flag 0
One use is to indicate whether an interrupt occurred during normal operation or
during Idle mode.
Power-Down Mode bit
Cleared by hardware when an interrupt or reset occurs.
Set to activate the Power-Down mode.
If IDL and PD are both set, PD takes precedence.
Idle Mode bit
Cleared by hardware when an interrupt or reset occurs.
Set to activate the Idle mode.
If IDL and PD are both set, PD takes precedence.
5
-
4
-
GF1
3
GF0
2
4383D–8051–02/08
PD
1
IDL
0