參數(shù)資料
型號: SST89E554RC-25-C-NI
廠商: Silicon Storage Technology, Inc.
英文描述: FlashFlex51 MCU
中文描述: FlashFlex51單片機(jī)
文件頁數(shù): 21/62頁
文件大?。?/td> 680K
代理商: SST89E554RC-25-C-NI
Preliminary Specifications
FlashFlex51 MCU
SST89E564RD / SST89V564RD / SST89E554RC / SST89V554RC
21
2001 Silicon Storage Technology, Inc.
S71207-00-000
9/01
555
Symbol
WDTD
Function
Initial/Reload value in Watchdog Timer. New value won’t be effective until WDT is set.
Symbol
CF
Function
PCA Timer/Counter Overflow Flag:
Set by hardware when the PCA timer/counter rolls over. This generates an interrupt
request if the ECF interrupt enable bit in CMOD is set. CF can be set by hardware or
software but can be cleared only by software.
PCA Timer/Counter Run Control Bit:
Set and Cleared by software to turn the PCA timer/counter on and off.
PCA Module Compare/Capture Flags:
Set by hardware when a match or capture occurs. This generates a PCA interrupt
request if the ECCFx interrupt enable bit in the corresponding CCAPMx register is set.
Must be cleared by software.
CR
CCF[4:0]
Symbol
CIDL
Function
PCA Timer/Counter Idle Control:
0: Allows the PCA timer/counter to run during idle mode.
1: Disables the PCA timer/counter during idle mode.
Watchdog Timer Enable:
0: Disables the PCA watchdog timer output.
1: Enables the PCA watchdog timer output on PCA module 4.
PCA Timer/Counter Input Select:
WDTE
CPS1,CPS0
ECF
PCA Timer/Counter Interrupt Enable:
0: Disables the CF bit in the CCON register.
1: Enables the CF bit in the CCON register to generate an interrupt request.
Watchdog Timer Data/Reload Register (WDTD)
Location
085H
7
6
5
4
3
2
1
0
Reset Value
00000000b
Watchdog Timer Data/Reload
PCA Timer/Counter Control Register (CCON)
Location
D8H
7
6
5
-
4
3
2
1
0
Reset Value
00x00000b
CF
CR
CCF4
CCF3
CCF2
CCF1
CCF0
PCA Timer/Counter Mode Register (CMOD)
Location
D9H
7
6
5
-
4
-
3
-
2
1
0
Reset Value
00xxx000b
CIDL
WDTE
CPS1
CPS0
ECF
CPS1
0
0
1
1
CPS0
0
1
0
1
f
OSC
/12
f
OSC
/4
Timer 0 overflow
External clock at ECI pin (maximum rate = f
OSC
/8)
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