AT89C5131A-M Atmel Corporation, AT89C5131A-M Datasheet - Page 62
AT89C5131A-M
Manufacturer Part Number
AT89C5131A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5131A-M
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
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AT89C5130A/31A-M
Table 14-4 shows the CCAPMn settings for the various PCA functions.
Table 14-3.
CCAPM0 - PCA Module 0 Compare/Capture Control Register (0DAh)
CCAPM1 - PCA Module 1 Compare/Capture Control Register (0DBh)
CCAPM2 - PCA Module 2 Compare/Capture Control Register (0DCh)
CCAPM3 - PCA Module 3 Compare/Capture Control Register (0DDh)
CCAPM4 - PCA Module 4 Compare/Capture Control Register (0DEh)
• The ECCF bit (CCAPMn.0 where n = 0, 1, 2, 3, or 4 depending on the module) enables the
• 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
• The match bit MAT (CCAPMn.3) when set will cause the CCFn bit in the CCON register to be
• The next two bits CAPN (CCAPMn.4) and CAPP (CCAPMn.5) determine the edge that a
• The last bit in the register ECOM (CCAPMn.6) when set enables the comparator function.
Number
CCF flag in the CCON SFR to generate an interrupt when a match or compare occurs in the
associated module.
toggle when there is a match between the PCA counter and the module's capture/compare
register.
set when there is a match between the PCA counter and the module's capture/compare
register.
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.
Bit
7
7
6
5
4
3
2
-
ECOMn
Mnemonic
CCAPMn Registers (n = 0-4)
ECOMn
CAPPn
CAPNn
6
TOGn
MATn
Bit
-
CAPPn
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Enable Comparator
Cleared to disable the comparator function.
Set to enable the comparator function.
Capture Positive
Cleared to disable positive edge capture.
Set to enable positive edge capture.
Capture Negative
Cleared to disable negative edge capture.
Set to enable negative edge capture.
Match
When MATn = 1, a match of the PCA counter with this module's compare/capture
register causes the
CCFn bit in CCON to be set, flagging an interrupt.
Toggle
When TOGn = 1, a match of the PCA counter with this module's compare/capture
register causes the CEXn pin to toggle.
5
CAPNn
4
MATn
3
TOGn
2
PWMn
1
ECCFn
0
4337K–USB–04/08
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