AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 51
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AT89C51IC2
Manufacturer Part Number
AT89C51IC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51IC2
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
34
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
640
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
4 116
Company:
Part Number:
AT89C51IC2-UL
Manufacturer:
XR
Quantity:
2
Company:
Part Number:
AT89C51IC2-UM
Manufacturer:
Atmel
Quantity:
5
Internal Baud Rate Generator
(BRG)
Figure 21. Internal Baud Rate
4301D–8051–02/08
Peripheral clock
BRR
When the internal Baud Rate Generator is used, the Baud Rates are determined by the
BRG overflow depending on the BRL reload value, the value of SPD bit (Speed Mode)
in BDRCON register and the value of the SMOD1 bit in PCON register.
•
The baud rate for UART is token by formula:
BaudRate
(
BRL
/6
)
=
256
SPD
0
1
=
auto reload counter
--------------------------------------------------------------------------------------------------------- -
2
–
×
---------------------------------------------------------------------------------------- -
2 2
2 6
×
×
2
×
〈
SMOD1
2
6
1 SPD
BRG
BRL
SMOD
(
1 SPD
–
–
×
×
overflow
〉
F
)
F
×
×
CLKPERIPH
CLKPERIPH
16
16
×
×
[
BaudRate
256
–
/2
(
BRL
)
]
0
1
INT_BRG
51