参数资料
型号: SST89V58RD2-33-C-TQJE
厂商: Microchip Technology
文件页数: 18/92页
文件大小: 0K
描述: IC MCU 8BIT 40KB FLASH 44TQFP
标准包装: 160
系列: FlashFlex®
核心处理器: 8051
芯体尺寸: 8-位
速度: 33MHz
连通性: EBI/EMI,SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 36
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 8K x 8
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 44-TQFP
包装: 托盘
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
25
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Symbol
Function
WDOUT
Watchdog output enable.
0: Watchdog reset will not be exported on Reset pin.
1: Watchdog reset if enabled by WDRE, will assert Reset pin for 32 clocks.
WDRE
Watchdog timer reset enable.
0: Disable watchdog timer reset.
1: Enable watchdog timer reset.
WDTS
Watchdog timer reset flag.
0: External hardware reset or power-on reset clears the flag.
Flag can also be cleared by writing a 1.
Flag survives if chip reset happened because of watchdog timer overflow.
1: Hardware sets the flag on watchdog overflow.
WDT
Watchdog timer refresh.
0: Hardware resets the bit when refresh is done.
1: Software sets the bit to force a watchdog timer refresh.
SWDT
Start watchdog timer.
0: Stop WDT.
1: Start WDT.
Symbol
Function
WDTD
Initial/Reload value in Watchdog Timer. New value won’t be effective until WDT is set.
Watchdog Timer Control Register (WDTC)
Location
76543210
Reset
Value
C0H
-
WDOUT
WDRE
WDTS
WDT
SWDT
xxx00000b
Watchdog Timer Data/Reload Register (WDTD)
Location
76543210
Reset
Value
85H
Watchdog Timer Data/Reload
00H
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