TS87C51RD2 ATMEL Corporation, TS87C51RD2 Datasheet - Page 31
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
TS87C51RD2
Manufacturer Part Number
TS87C51RD2
Description
(TS8xC51Rx2) High Performance 8-bit Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.TS87C51RD2.pdf
(85 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TS87C51RD2-LCB
Manufacturer:
TEMIC
Quantity:
68
Company:
Part Number:
TS87C51RD2-LIE
Manufacturer:
ATMEL
Quantity:
2 151
Company:
Part Number:
TS87C51RD2-MCA
Manufacturer:
TEMIC
Quantity:
124
Company:
Part Number:
TS87C51RD2-MCA
Manufacturer:
TEMIC
Quantity:
126
Part Number:
TS87C51RD2-MCB
Manufacturer:
INTEL
Quantity:
20 000
Company:
Part Number:
TS87C51RD2-MIA
Manufacturer:
TEMIC
Quantity:
31
Figure 6-7.
6.3.3
4188E–8051–08/06
CCAPnH
Write to
High Speed Output Mode
PCA Compare Mode and PCA Watchdog Timer
1
CCAPnL
Write to
0
Before enabling ECOM bit, CCAPnL and CCAPnH should be set with a non zero value, other-
wise an unwanted match could happen. Writing to CCAPnH will set the ECOM bit.
Once ECOM set, writing CCAPnL will clear ECOM so that an unwanted match doesn’t occur
while modifying the compare value. Writing to CCAPnH will set ECOM. For this reason, user
software should write CCAPnL first, and then CCAPnH. Of course, the ECOM bit can still be
controlled by accessing to CCAPMn register.
In this mode the CEX output (on port 1) associated with the PCA module will toggle each time a
match occurs between the PCA counter and the module's capture registers. To activate this
mode the TOG, MAT, and ECOM bits in the module's CCAPMn SFR must be set (See Figure 6-
8).
A prior write must be done to CCAPnL and CCAPnH before writing the ECOMn bit.
Reset
Enable
*
Only for Module 4
CCAPnH
CH
PCA counter/timer
16 bit comparator
CIDL
CF
ECOMn
WDTE
CCAPnL
CR
CL
CAPPn
Match
CAPNn MATn TOGn PWMn ECCFn
CCF4
CCF3
CCF2 CCF1 CCF0
CPS1 CPS0
ECF
AT/TS8xC51Rx2
CCON
0xD8
CCAPMn, n = 0 to 4
0xDA to 0xDE
CMOD
0xD9
PCA IT
RESET *
31