参数资料
型号: SST89C58RC-40-I-TQJE
厂商: Microchip Technology
文件页数: 33/88页
文件大小: 0K
描述: IC MCU 8BIT FLASH 40TQFP
标准包装: 160
系列: FlashFlex®
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: EBI/EMI,I²C,SMBus,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 32
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 托盘
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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