AT89C51RE2-RLTUM Atmel, AT89C51RE2-RLTUM Datasheet - Page 65

• Manufacturer Part Number: AT89C51RE2-RLTUM
• Description: MCU 8051 128K FLASH 44-VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RE2-RLTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• 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: 8 KB
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89OCD-01
• Minimum Operating Temperature: - 40 C
• Height: 1.45 mm
• Length: 10.1 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 10.1 mm
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Blank Checking
commands
FLASH
7663E–8051–10/08
The blank checking command is supported by the following areas
Table 40. Memory space & Erase
Nothing is done on the other areas.
The first not erased address is returned if the blank check is failed.
The blank checking command on the Flash memory can be done from address 0000h to
1FFFFh.
The blank check operation is only possible if the HSB (Hardware Security Byte) has a security
level lower than or equal to ‘2’ (FLB2.0 = ‘110’)
Table 41. Flash Blank check Authorization Summary
FLASH
Blank Check
Memory/Information Family
Command
Allowed
111
Allowed
110
Security level (HSB)
need security level check
Comments/Restriction
FLB2:0
Forbidden
AT89C51RE2
101
Forbidden
011
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