參數(shù)資料
型號: SST89E54RC-33-C-PIE
廠商: Microchip Technology
文件頁數(shù): 15/71頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 17KB FLASH 40PDIP
標準包裝: 9
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,UART/USART
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25088A
10/11
22
FlashFlex MCU
SST89E52RC / SST89E54RC
Data Sheet
A Microchip Technology Company
Symbol
Function
COEN
Clock Divider Enable
0: Disable Clock Divider
1: Enable Clock Divider
CO_SEL
Clock Divider Selection
00b: 1/4 clock source
01b: 1/16 clock source
10b: 1/256 clock source
11b: 1/1024 clock source
CO_IN
Clock Source Selection
0b: Select clock from 1x clock
1b: Select clock from 2x clock
The default value of this bit is set during Power-on reset by copying from
Enable_Clock_Double_i non-volatile bit setting. CO_IN can be changed during normal
operation to select the double clock option.
If the clock source is a 1x clock, the clock divider exports 1/4, 1/16, 1/256, or 1/1024 of
the input clock.
If the clock source is a 2x clock, the clock divider exports 1/2, 1/8, 1/128, or 1/512 of the
input clock.
Symbol
Function
WDU
Watchdog Timer Clock Control
0:The clock for the Watchdog timer is running
1:The clock for the Watchdog timer is stopped
TCT
Timer 0/1 Clock Control
0:The Timer 0/1 logic is running
1:The Timer 0/1 logic is stopped
TCT2
Timer 2 Clock Control
0:The Timer 2 logic is running
1:The Timer 2 logic is stopped
PB2
Further Power Control 2
0:The PB2 logic is running
1:The PB2 logic is stopped
PB1
Further Power Control 1
0:The PB1 logic is running
1:The PB1 logic is stopped
Power consumption can be decreased by setting both PB2 and PB1 to 1.
Clock Option Register (COSR)
Location
7
6
5
43210
Reset
Value
BFH
-
COEN
CO_SEL
CO_IN
00H
Power Management Control Register (PMC)
Location
76543210
Reset
Value
A1H
-
WDU
TCT
TCT2
PB2
PB1
UART
xx000000b
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