AT89C51CC03UA-SLSUM Atmel, AT89C51CC03UA-SLSUM Datasheet - Page 133
AT89C51CC03UA-SLSUM
Manufacturer Part Number
AT89C51CC03UA-SLSUM
Description
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer
Atmel
Series
AT89C CANr
Datasheet
1.AT89C51CC03C-S3RIM.pdf
(198 pages)
Specifications of AT89C51CC03UA-SLSUM
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
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2304 B
Interface Type
UART, SPI
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
36
Number Of Timers
2
Operating Supply Voltage
3 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AT89C51CC03UASLSUM
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Figure 60. Data Transmission Format (CPHA = 0)
Figure 61. Data Transmission Format (CPHA = 1)
Figure 62. CPHA/SS Timing
Queuing transmission
4182O–CAN–09/08
MOSI (from Master)
SCK Cycle Number
MISO (from Slave)
MOSI (from Master)
SCK (CPOL = 0)
SCK (CPOL = 1)
MISO (from Slave)
SCK Cycle Number
SPEN (Internal)
SCK (CPOL = 0)
SCK (CPOL = 1)
Capture Point
SPEN (Internal)
SS (to Slave)
Capture Point
SS (to Slave)
MISO/MOSI
(CPHA = 0)
(CPHA = 1)
Master SS
Slave SS
Slave SS
As shown in Figure 60, the first SCK edge is the MSB capture strobe. Therefore, the
Slave must begin driving its data before the first SCK edge, and a falling edge on the SS
pin is used to start the transmission. The SS pin must be toggled high and then low
between each Byte transmitted (Figure 62).
Figure 61 shows an SPI transmission in which CPHA is ’1’. In this case, the Master
begins driving its MOSI pin on the first SCK edge. Therefore, the Slave uses the first
SCK edge as a start transmission signal. The SS pin can remain low between transmis-
sions (Figure 62). This format may be preferred in systems having only one Master and
only one Slave driving the MISO data line.
For an SPI configured in master or slave mode, a queued data byte must be transmit-
ted/received immediately after the previous transmission has completed.
MSB
MSB
MSB
1
MSB
1
2
bit6
bit6
2
bit6
Byte 1
bit6
3
bit5
bit5
3
bit5
bit5
bit4
4
bit4
bit4
4
bit4
Byte 2
bit3
bit3
5
bit3
bit3
5
6
bit2
bit2
6
bit2
bit2
Byte 3
7
bit1
bit1
7
bit1
bit1
LSB
8
LSB
LSB
8
LSB
AT89C51CC03
133
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