參數(shù)資料
型號(hào): SST89C58RC-40-I-TQJE
廠商: Microchip Technology
文件頁(yè)數(shù): 33/88頁(yè)
文件大?。?/td> 0K
描述: IC MCU 8BIT FLASH 40TQFP
標(biāo)準(zhǔn)包裝: 160
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: EBI/EMI,I²C,SMBus,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤(pán)
2011 Silicon Storage Technology, Inc.
DS25100A
12/11
39
FlashFlex MCU
SST89C58RC
Data Sheet
A Microchip Technology Company
Normal Mode
If the “Boot-From-Zero” bit is ‘0’, the MCU boots from 0x0000. If both the “Boot-From-Zero” bit and the
“Boot-From-User-Vector” bit are ‘1’, the USER Boot Vector is applicable (0xF800).
If the “Boot-From-Zero” bit is ‘1’ and the “Boot-From-User-Vector” bit is ‘0’, the USER Boot Vector is
applicable. This is used as the high byte of the program counter (PC) starting address while the lower
byte of PC is 00H. See Figure 15.
Figure 15:Boot Sequence Flowchart
1337 F61.1
Power-on
External Boot (EA)
Default Boot Vector
0x0000
No
Hardware Active
Both P1.0, P1.1
are Low
No
External ROM
0x0000
“Boot-From-Zero”
Bit=0
No
“Boot-From-User-
Vector” = 0
No
Yes
User Boot Vector
Yes
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