参数资料
型号: C8051F300-GS
厂商: Silicon Laboratories Inc
文件页数: 170/178页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 14-SOIC
产品培训模块: Serial Communication Overview
标准包装: 56
系列: C8051F30x
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SMBus(2 线/I²C),UART/USART
外围设备: POR,PWM,温度传感器,WDT
输入/输出数: 8
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
包装: 管件
产品目录页面: 622 (CN2011-ZH PDF)
配用: 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
336-1351-ND - KIT REF DES TEMP COMPENS RTC
336-1348-ND - KIT STARTER TOOLSTICK
336-1283-ND - KIT REF DESIGN DTMF DECODER
336-1278-ND - KIT TOOL EVAL SYS IN A USB STICK
336-1246-ND - DEV KIT F300/301/302/303/304/305
其它名称: 336-1535-5
Table 10.2. Security Byte Decoding
Bits
Description
Write Lock: Clearing any of these bits to logic 0 prevents all Flash
memory from being written or page-erased across the C2 interface
Read/Write Lock: Clearing any of these bits to logic 0 prevents all
Flash memory from being read, written, or page-erased across the
C2 interface.
Rev. 2.9
91
C8051F300/1/2/3/4/5
The lock bits can always be read and cleared to logic 0 regardless of the security settings.
Important note: The only means of removing a lock (write or read/write) once set is to erase the
entire program memory space via a C2 Device Erase command.
C8051F300/1/2/3
0x0000
0x1DFF
Lock Byte
Reserved
0x1DFE
FLASH memory
organized in 512-byte
pages
0x1E00
0x0000
0x0FFF
Reserved
0x0FFE
FLASH memory
organized in 512-byte
pages
0x1000
0x0000
0x07FF
Lock Byte
Reserved
0x07FE
FLASH memory
organized in 512-byte
pages
0x0800
Lock Byte
C8051F304
C8051F305
Figure 10.1. Flash Program Memory Map
The level of Flash security depends on the Flash access method. The three Flash access methods that
can be restricted are reads, writes, and erases from the C2 debug interface, user firmware executing on
unlocked pages, and user firmware executing on locked pages.
Accessing Flash from the C2 debug interface:
1.
Any unlocked page may be read, written, or erased.
2.
Locked pages cannot be read, written, or erased.
3.
The page containing the Lock Byte may be read, written, or erased if it is unlocked.
4.
Reading the contents of the Lock Byte is always permitted only if no pages are locked.
5.
Locking additional pages (changing ‘1’s to ‘0’s in the Lock Byte) is not permitted.
6.
Unlocking Flash pages (changing ‘0’s to ‘1’s in the Lock Byte) requires the C2 Device Erase com-
mand, which erases all Flash pages including the page containing the Lock Byte and the Lock
Byte itself.
7.
The Reserved Area cannot be read, written, or erased.
7–4
3–0
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