AT89C51CC03UA-RDTUM Atmel, AT89C51CC03UA-RDTUM Datasheet - Page 77
![IC 8051 MCU FLASH 64K 64-VQFP](/photos/6/81/68127/313-64-vqfp_sml.jpg)
AT89C51CC03UA-RDTUM
Manufacturer Part Number
AT89C51CC03UA-RDTUM
Description
IC 8051 MCU FLASH 64K 64-VQFP
Manufacturer
Atmel
Series
AT89C CANr
Datasheet
1.AT89C51CC03C-S3RIM.pdf
(198 pages)
Specifications of AT89C51CC03UA-RDTUM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, SPI, 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
64-TQFP, 64-VQFP
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
Package
64VQFP
Device Core
8051
Family Name
AT89
Maximum Speed
60 MHz
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Programmable Clock-
Output
Figure 41. Clock-Out Mode
4182O–CAN–09/08
T2EX
CLOCK
T2
FT2
In clock-out mode, timer 2 operates as a 50%-duty-cycle, programmable clock genera-
tor (See Figure 41). The input clock increments TL2 at frequency F
repeatedly counts to overflow from a loaded value. At overflow, the contents of RCAP2H
and RCAP2L registers are loaded into TH2 and TL2. In this mode, timer 2 overflows do
not generate interrupts. The formula gives the clock-out frequency depending on the
system oscillator frequency and the value in the RCAP2H and RCAP2L registers:
For a 16 MHz system clock in x1 mode, timer 2 has a programmable frequency range of
61 Hz (F
(P1.0).
Timer 2 is programmed for the clock-out mode as follows:
•
•
•
•
•
It is possible to use timer 2 as a baud rate generator and a clock generator simulta-
neously. For this configuration, the baud rates and clock frequencies are not
independent since both functions use the values in the RCAP2H and RCAP2L registers.
Set T2OE bit in T2MOD register.
Clear C/T2 bit in T2CON register.
Determine the 16-bit reload value from the formula and enter it in RCAP2H/RCAP2L
registers.
Enter a 16-bit initial value in timer registers TH2/TL2. It can be the same as the
reload value or different depending on the application.
To start the timer, set TR2 run control bit in T2CON register.
OSC
Clock OutFrequency
/2
16)
–
to 4 MHz (F
Q
Q
Toggle
T2CON reg
D
EXEN2
T2CON.2
OSC
TR2
/4). The generated clock signal is brought out to T2 pin
=
---------------------------------------------------------------------------------------- -
4
×
(
T2CON reg
65536 RCAP2H
RCAP2L
EXF2
(8-bit)
(8-bit)
TL2
T2MOD reg
T2OE
–
FT2clock
RCAP2H
(8-bit)
(8-bit)
TH2
INTERRUPT
TIMER 2
AT89C51CC03
⁄
RCAP2L
OVERFLOW
)
OSC
/2. The timer
77
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