AT89C51RC2-RLTIL Atmel, AT89C51RC2-RLTIL Datasheet - Page 37
AT89C51RC2-RLTIL
Manufacturer Part Number
AT89C51RC2-RLTIL
Description
8-bit Microcontrollers - MCU 80C31 w/4k
Manufacturer
Atmel
Datasheet
1.AT89C51RC2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RC2-RLTIL
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
60 MHz
Program Memory Size
32 KB
Data Ram Size
1280 B
On-chip Adc
No
Operating Supply Voltage
2.7 V to 5.5 V
Package / Case
VQFP-44
Mounting Style
SMD/SMT
Interface Type
SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
32
Number Of Timers
3
Program Memory Type
Flash
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RC2-RLTIL
Manufacturer:
ATMEL
Quantity:
5 000
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- Download datasheet (791Kb)
4180E–8051–10/06
Table 25. PCA Module Modes (CCAPMn Registers)
There are two additional registers associated with each of the PCA Modules. They are
CCAPnH and CCAPnL and these are the registers that store the 16-bit count when a
capture occurs or a compare should occur. When a Module is used in the PWM mode
these registers are used to control the duty cycle of the output (see Table 26 and
Table 27).
Table 26. CCAPnH Registers (n = 0-4)
CCAP0H – PCA Module 0 Compare/Capture Control Register High (0FAh)
CCAP1H – PCA Module 1 Compare/Capture Control Register High (0FBh)
CCAP2H – PCA Module 2 Compare/Capture Control Register High (0FCh)
CCAP3H – PCA Module 3 Compare/Capture Control Register High (0FDh)
CCAP4H – PCA Module 4 Compare/Capture Control Register High (0FEh)
Reset Value = 0000 0000b
Not bit addressable
ECOMn
Number
X
X
X
0
1
1
1
1
7 - 0
Bit
7
-
CAPPn
0
1
0
1
0
0
0
0
Mnemonic Description
Bit
6
-
-
CAPNn
0
0
1
1
0
0
0
0
PCA Module n Compare/Capture Control
CCAPnH Value
MATn
5
-
0
0
0
0
1
1
0
1
TOGn
X
0
0
0
0
0
1
0
4
-
PWMm
0
0
0
0
0
0
1
0
3
-
ECCFn Module Function
AT89C51RB2/RC2
X
X
X
X
X
X
0
0
16-bit capture by a positive-edge
trigger on CEXn
16-bit capture by a negative trigger
on CEXn
16-bit capture by a transition on
CEXn
16-bit Software Timer/Compare
mode.
No Operation
16-bit High-speed Output
8-bit PWM
Watchdog Timer (Module 4 only)
2
-
1
-
0
-
37
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