AT89C51RC2-SLSUL Atmel, AT89C51RC2-SLSUL Datasheet - Page 35
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AT89C51RC2-SLSUL
Manufacturer Part Number
AT89C51RC2-SLSUL
Description
IC 8051 MCU FLASH 32K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RC2-SLSUL
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
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
1280 B
Interface Type
UART, SPI
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 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
Package
44PLCC
Device Core
80C51
Family Name
AT89
Maximum Speed
40 MHz
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RC2-SLSUL
Manufacturer:
Atmel
Quantity:
1 494
Figure 12. PCA Interrupt System
4180E–8051–10/06
PCA Timer/Counter
Module 0
Module 1
Module 2
Module 3
Module 4
CMOD. 0
PCA Modules: each one of the five compare/capture Modules has six possible func-
tions. It can perform:
•
•
•
•
•
•
In addition, Module 4 can be used as a Watchdog Timer.
Each Module in the PCA has a special function register associated with it. These regis-
ters are: CCAPM0 for Module 0, CCAPM1 for Module 1, etc. (see Table 24). The
registers contain the bits that control the mode that each Module will operate in.
•
•
•
•
•
•
Table 24 shows the CCAPMn settings for the various PCA functions.
ECF
16-bit Capture, positive-edge triggered
16-bit Capture, negative-edge triggered
16-bit Capture, both positive and negative-edge triggered
16-bit Software Timer
16-bit High-speed Output
8-bit Pulse Width Modulator
The ECCF bit (CCAPMn. 0 where n = 0, 1, 2, 3, or 4 depending on the Module)
enables the CCF flag in the CCON SFR to generate an interrupt when a match or
compare occurs in the associated Module.
PWM (CCAPMn. 1) enables the pulse width modulation mode.
The TOG bit (CCAPMn. 2) when set causes the CEX output associated with the
Module to toggle when there is a match between the PCA counter and the Module's
capture/compare register.
The match bit MAT (CCAPMn. 3) when set will cause the CCFn bit in the CCON
register to be set when there is a match between the PCA counter and the Module's
capture/compare register.
The next two bits CAPN (CCAPMn. 4) and CAPP (CCAPMn. 5) determine the edge
that a capture input will be active on. The CAPN bit enables the negative edge, and
the CAPP bit enables the positive edge. If both bits are set both edges will be
enabled and a capture will occur for either transition.
The last bit in the register ECOM (CCAPMn. 6) when set enables the comparator
function.
CF
ECCFn CCAPMn. 0
CR
CCF4 CCF3 CCF2 CCF1 CCF0
IEN0. 6
EC
IEN0. 7
EA
AT89C51RB2/RC2
Priority Decoder
CCON
0xD8
To Interrupt
35