AT87C51RC2-3CSUM Atmel, AT87C51RC2-3CSUM Datasheet - Page 30

IC 8051 MCU 32K OTP 40MHZ 40DIP

AT87C51RC2-3CSUM

Manufacturer Part Number
AT87C51RC2-3CSUM
Description
IC 8051 MCU 32K OTP 40MHZ 40DIP
Manufacturer
Atmel
Series
87Cr
Datasheet

Specifications of AT87C51RC2-3CSUM

Core Processor
8051
Core Size
8-Bit
Speed
40/20MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Figure 6-6.
6.3.2
30
AT/TS8xC51Rx2
16-bit Software Timer/ Compare Mode
Cex.n
PCA Capture Mode
The PCA modules can be used as software timers by setting both the ECOM and MAT bits in
the modules CCAPMn register. The PCA timer will be compared to the module's capture regis-
ters and when a match occurs an interrupt will occur if the CCFn (CCON SFR) and the ECCFn
(CCAPMn SFR) bits for the module are both set (See Figure 6-7).
CF
ECOMn
CR
CAPPn
CAPNn MATn TOGn PWMn ECCFn
CCF4 CCF3 CCF2 CCF1 CCF0
Capture
CCAPMn, n= 0 to 4
0xDA to 0xDE
CCON
0xD8
CCAPnH
PCA Counter/Timer
CH
CCAPnL
CL
PCA IT
4188F–8051–01/08

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