AT89C51RE2-RLTUM Atmel, AT89C51RE2-RLTUM Datasheet - Page 26
![MCU 8051 128K FLASH 44-VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT89C51RE2-RLTUM
Manufacturer Part Number
AT89C51RE2-RLTUM
Description
MCU 8051 128K FLASH 44-VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RE2-SLSUM.pdf
(187 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RE2-RLTUM
Manufacturer:
MSC
Quantity:
1 560
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AT89C51RE2
Reset Value = 00XX 00X0b
Not bit addressable
Number
Bit
6
5
4
3
2
1
0
Mnemonic
DPS
SP9
GF2
Bit
U2
0
-
-
Description
Stack Pointer 9th Bit
This bit has no effect when the EES bit is cleared.
Set when the stack pointer belongs to the XRAM memory space
Cleared when the stack pointer belongs to the 256bytes of internal RAM. Set and
cleared by hardware. Can only be read.
P4 bit addressable
Clear to map SCON_1 register at C0h sfr address
Set to map P4 port register at C0h address.
Reserved
Reserved
Data Pointer Selection
The value read from this bit is indeterminate. Do not set this bit.
This bit is a general purpose user flag. *
Always cleared.
The value read from this bit is indeterminate. Do not set this bit.
Cleared to select DPTR0.
Set to select DPTR1.
7663E–8051–10/08
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