AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 115

• Manufacturer Part Number: AT89LP51ED2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51ED2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Eeprom (bytes): 4096
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

Table 17-6.
3714A–MICRO–7/11
BRL Address = 09AH
Not Bit Addressable
Bit
Symbol
BRL
7-0
7
Function
Baud Rate Reload Value
Holds the 8-bit reload value of the Internal Baud Rate Generator. This value is loaded into the BRG when the BRG
overflows from FFH to 00H.
BRL – Baud Rate Reload Register
Figure 17-1. Internal Baud Rate Generator
Table 17-5.
6
Baud Rate
115200
57600
38400
28800
19200
9600
4800
4800
2400
1200
600
CLK
SYS
5
Commonly Used Baud Rates Generated by BRG
X2
1
1
1
1
1
1
1
0
0
0
0
÷6
(BDRCON.1)
4
SMOD1
AT89LP51RD2/ED2/ID2 Preliminary
SPD
0
1
1
1
1
1
1
1
1
0
0
0
0
(BDRCON.4)
BRR
SPD
3
1
1
1
1
1
1
1
0
0
0
0
f
BRL
BRG
BRL
OSC
247
238
229
220
203
149
247
238
220
185
43
2
= 16.384 MHz
Overflow
Error (%)
1.23
1.23
1.23
1.23
0.63
0.31
1.23
1.23
1.23
1.23
0.16
Reset Value = 0000 0000B
÷6
1
(PCON.7)
SMOD1
0
1
BRL
243
230
217
204
178
100
243
230
202
152
–
f
OSC
UART
= 24 MHz
0
Error (%)
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
3.55
0.16
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