參數(shù)資料
型號(hào): SST89V54RD2A-33-C-TQJE
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44
封裝: ROHS COMPLIANT, MS-026, TQFP-44
文件頁(yè)數(shù): 21/83頁(yè)
文件大?。?/td> 1746K
代理商: SST89V54RD2A-33-C-TQJE
28
Data Sheet
FlashFlex51 MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
SST89V54RD2A/RDA / SST89V58RD2A/RDA
2006 Silicon Storage Technology, Inc.
S71339-00-000
12/06
Symbol
Function
WDTD
Initial/Reload value in Watchdog Timer. New value won’t be effective until WDT is set.
Symbol
Function
CF
PCA Counter Overflow Flag
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
PCA Module 4 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
CCF3
PCA Module 3 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
CCF2
PCA Module 2 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
CCF1
PCA Module 1 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
CCF0
PCA Module 0 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
Watchdog Timer Data/Reload Register (WDTD)
Location
76543210
Reset Value
85H
Watchdog Timer Data/Reload
00H
PCA Timer/Counter Control Register1 (CCON)
1. Bit addressable
Location
76543210
Reset Value
D8H
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
00x00000b
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