AT89C51ID2-SLRUM Atmel, AT89C51ID2-SLRUM Datasheet - Page 48
AT89C51ID2-SLRUM
Manufacturer Part Number
AT89C51ID2-SLRUM
Description
IC 8051 MCU 64K FLASH 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-SLRUM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 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
2 KB
Interface Type
UART, SPI, TWI
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
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
AT89C51ID2-SLRUMTR
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PCA Capture Mode
Figure 16. PCA Capture Mode
16-bit Software Timer/
Compare Mode
4289C–8051–11/05
Cex.n
CF
ECOMn
CR
To use one of the PCA modules in the capture mode either one or both of the CCAPM
bits CAPN and CAPP for that module must be set. The external CEX input for the mod-
ule (on port 1) is sampled for a transition. When a valid transition occurs the PCA
hardware loads the value of the PCA counter registers (CH and CL) into the module's
capture registers (CCAPnL and CCAPnH). If the CCFn bit for the module in the CCON
SFR and the ECCFn bit in the CCAPMn SFR are set then an interrupt will be generated
(Refer to Figure 16).
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 registers 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 17).
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
AT89C51ID2
PCA IT
48
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