AT89C51AC2-RLTUM Atmel, AT89C51AC2-RLTUM Datasheet - Page 105

• Manufacturer Part Number: AT89C51AC2-RLTUM
• Description: IC 8051 MCU FLASH 32K 44VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51AC2-RLTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 1.25K 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: 1280 B
• Interface Type: UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 34
• 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

External Program Memory
Characteristics
4127H–8051–02/08
Table 78. Symbol Description
Table 79. AC Parameters for a Fix Clock (F = 40 MHz)
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
PLAZ
LHLL
AVLL
LLAX
LLPL
PXIX
AVIV
LLIV
PLIV
PXIZ
T
Symbol
T
T
T
T
T
T
T
T
T
T
T
AVLL
LLAX
PLPH
PLAZ
Parameter
Oscillator clock period
ALE pulse width
Address Valid to ALE
Address Hold After ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Address to Valid Instruction In
PSEN Low to Address Float
LHLL
LLPL
PXIX
PXIZ
AVIV
LLIV
PLIV
T
Min
25
40
10
10
15
55
0
Max
70
35
18
85
10
A/T89C51AC2
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
105