AT89C51CC03C-SLRIM Atmel, AT89C51CC03C-SLRIM Datasheet - Page 125
AT89C51CC03C-SLRIM
Manufacturer Part Number
AT89C51CC03C-SLRIM
Description
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer
Atmel
Series
AT89C CANr
Datasheets
1.AT89C51CC03C-S3RIM.pdf
(198 pages)
2.AT89C51CC03C-S3RIM.pdf
(32 pages)
3.AT89C51CC03C-S3RIM.pdf
(27 pages)
4.AT89C51CC03C-S3RIM.pdf
(184 pages)
Specifications of AT89C51CC03C-SLRIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT89C51CC03CSLRTR
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Baud Rate
4182E–CAN–05/04
In a Master configuration, the SS line can be used in conjunction with the MODF flag in
the SPI Status register (SPSCR) to prevent multiple masters from driving MOSI and
SCK (see Error conditions).
A high level on the SS pin puts the MISO line of a Slave SPI in a high-impedance state.
The SS pin could be used as a general-purpose if the following conditions are met:
•
•
Note:
In Master mode, the baud rate can be selected from a baud rate generator which is con-
trolled by three bits in the SPCON register: SPR2, SPR1 and SPR0.The Master clock is
selected from one of seven clock rates resulting from the division of the internal clock by
4, 8, 16, 32, 64 or 128.
Table 90 gives the different clock rates selected by SPR2:SPR1:SPR0.
In Slave mode, the maximum baud rate allowed on the SCK input is limited to F
Table 90. SPI Master Baud Rate Selection
SPR2
The device is configured as a Master and the SSDIS control bit in SPCON is set.
This kind of configuration can be found when only one Master is driving the network
and there is no way that the SS pin could be pulled low. Therefore, the MODF flag in
the SPSCR will never be set
The Device is configured as a Slave with CPHA and SSDIS control bits set
kind of configuration can happen when the system includes one Master and one
Slave only. Therefore, the device should always be selected and there is no reason
that the Master uses the SS pin to select the communicating Slave device.
0
0
0
0
1
1
1
1
1. Clearing SSDIS control bit does not clear MODF.
2. Special care should be taken not to set SSDIS control bit when CPHA =’0’ because in
this mode, the SS is used to start the transmission.
SPR1
0
0
1
1
0
0
1
1
SPR0
0
1
0
1
0
1
0
1
(1)
.
F
F
F
F
F
CLK PERIPH
F
Clock Rate
CLK PERIPH
CLK PERIPH
CLK PERIPH
CLK PERIPH
Don’t Use
CLK PERIPH
Don’t Use
/128
/16
/32
/64
/8
/4
AT89C51CC03
Baud Rate Divisor (BD)
No BRG
No BRG
128
16
32
64
4
8
(2)
sys
. This
/4
125
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