FlashFlex MCU
SST89E564RD / SST89V564RD
SST89E554RC / SST89V554RC
EOL Data Sheet
Watchdog Timer Data/Reload Register (WDTD)
Location
7
6
5
4
3
2
1
0
Reset Value
85H
Watchdog Timer Data/Reload
00H
Symbol
Function
WDTD
Initial/Reload value in Watchdog Timer. New value won’t be effective until WDT is set.
PCA Timer/Counter Control Register1 (CCON)
Location
7
6
5
4
3
2
1
0
Reset Value
D8H
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
00x00000b
1. Bit addressable
Symbol
Function
PCA Counter Overflow Flag
CF
Set by hardware when the counter rolls over. CF flags an interrupt if bit ECF in CMOD
is set. CF may be set by either hardware or software, but can only cleared by software.
CR
PCA Counter Run control bit
Set by software to turn the PCA counter on. Must be cleared by software to turn the
PCA counter off.
-
Not implemented, reserved for future use.
Note: User should not write ‘1’s to reserved bits. The value read from a reserved bit is indeterminate.
CCF4
CCF3
CCF2
CCF1
CCF0
PCA Module 4 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 3 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 2 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 1 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 0 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
©2007 Silicon Storage Technology, Inc.
S71207-08-EOL
1/07
27
SST [ SILICON STORAGE TECHNOLOGY, INC ]
