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AT89C51RB2

Status: In Production

Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

High-performance, 8-bit microcontroller with 16KB flash. It retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller, and three timer/counters.

It features a programmable counter array, an XRAM of 1024 bytes, hardware watchdog timer, keyboard interface, SPI interface, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 mode).

Implementing an external brown-out is recommended to prevent any flash/EEPROM corruption during power-on or power-off.

Parametrics
Name
Value
Program Memory Type
Flash
Program Memory Size (KB)
16
CPU Speed (MIPS/DMIPS)
10
SRAM (KB)
1
Digital Communication Peripherals
1-UART, 1-SPI,
Temperature Range (°C)
0 to 0
Operating Voltage Range (V)
2.7 to 5.5
Pin Count
44

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Similar Devices

Product
Pins
Flash (KB)
RAM (B)
Price 5K
Notes
44
0
1
$0.98
 
32
0
1
 
 
32
0
1
 
 
64
0
1
 
 
20
0
0
 
 
20
2
0
$0.69
 
20
4
0
$0.73
 
32
16
0
$4.42
 
64
16
1
$3.09
 
64
32
1
$3.91
 
64
32
1
$3.81
 
44
32
1
$4.72
 
64
64
2
$4.91
 
44
32
1
$4.58
 
32
16
0
$4.12
 
64
64
2
$5.39
 
44
64
2
$4.72
 
44
32
1
$4.03
 
44
64
2
$5.80
 
44
16
1
$3.44
 
44
32
0
$1.39
 
44
32
1
$3.93
 
44
20
0
$1.39
 
20
4
0
 
 
44
4
0
$1.03
 
44
8
0
$1.12
 
20
2
0
$1.26
 
20
4
0
$1.08
 
44
4
0
$1.03
 
44
8
0
$1.11
 
44
12
0
$1.30
 

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
AT89C51RB2-RLRUL
0.341100
0.340667
44
LQFP
10x10x1.4mm
Matte Tin
e3
AT89C51RB2-RLTUL
0.341100
1.418750
44
LQFP
10x10x1.4mm
Matte Tin
e3
AT89C51RB2-RLTUM
0.341100
1.418750
44
LQFP
10x10x1.4mm
Matte Tin
e3
AT89C51RB2-SLRUM
2.375500
3.400000
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
AT89C51RB2-SLSUL
2.375500
3.703704
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
AT89C51RB2-SLSUM
2.375500
3.703704
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
AT89C51RB2-SLRUL
2.375500
3.400000
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
AT89C51RB2-3CSUL
6.500000
10.600000
40
PDIP
.600in
Matte Tin
e3
AT89C51RB2-3CSUM
6.500000
10.600000
40
PDIP
.600in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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