AT89C5131A-TISIL Atmel, AT89C5131A-TISIL Datasheet - Page 62
AT89C5131A-TISIL
Manufacturer Part Number
AT89C5131A-TISIL
Description
IC 8051 MCU FLASH 32K USB 28SOIC
Manufacturer
Atmel
Series
AT89C513xr
Specifications of AT89C5131A-TISIL
Core Processor
C52X2
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
LED, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
For Use With
AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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PCA Capture Mode
Figure 30. PCA Capture Mode
16-bit Software
Timer/Compare Mode
62
AT89C5131A-L
Cex.n
CF
ECOMn
CR
Table 55. CL Register
CL - PCA Counter Register Low (0E9h)
Reset Value = 0000 0000b
Not bit addressable
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
(see Figure 30).
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 31).
Number
7 - 0
Bit
CAPPn
7
-
CAPNn MATn TOGn PWMn ECCFn
CCF4 CCF3 CCF2 CCF1 CCF0
Mnemonic
Bit
6
-
-
Description
PCA Counter
CL Value
Capture
5
-
4
-
CCAPMn, n = 0 to 4
0xDA to 0xDE
CCON
0xD8
CCAPnH
3
-
PCA Counter/Timer
CH
2
-
CCAPnL
CL
1
-
PCA IT
4338F–USB–08/07
0
-
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