AT89C51RB2-RLTIL Atmel, AT89C51RB2-RLTIL Datasheet - Page 50
AT89C51RB2-RLTIL
Manufacturer Part Number
AT89C51RB2-RLTIL
Description
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RB2-RLTIL
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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UART Registers
50
AT89C51RB2/RC2
Table 34. Example of Computed Value When X2=1, SMOD1=1, SPD=1
Table 35. Example of Computed Value When X2=0, SMOD1=0, SPD=0
The baud rate generator can be used for mode 1 or 3 (refer to Figure 20.), but also for
mode 0 for UART, thanks to the bit SRC located in BDRCON register (Table 42.)
Table 36. SADEN Register
SADEN - Slave Address Mask Register for UART (B9h)
Reset Value = 0000 0000b
Table 37. SADDR Register
SADDR - Slave Address Register for UART (A9h)
Reset Value = 0000 0000b
Baud Rates
Baud Rates
7
7
115200
57600
38400
28800
19200
9600
4800
4800
2400
1200
600
6
6
BRL
BRL
247
238
229
220
203
149
247
238
220
185
43
F
F
5
5
OSC
OSC
= 16. 384 MHz
= 16. 384 MHz
4
4
Error (%)
Error (%)
1.23
1.23
1.23
1.23
0.63
0.31
1.23
1.23
1.23
1.23
0.16
3
3
BRL
BRL
2
2
243
230
217
204
178
100
243
230
202
152
-
F
F
OSC
OSC
= 24MHz
= 24MHz
1
1
4180E–8051–10/06
Error (%)
Error (%)
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
3.55
0.16
-
0
0
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