The following procedure is used to read the Hardware Security
參數(shù)資料
型號(hào): PIC10F204-E/MC
廠商: Microchip Technology
文件頁(yè)數(shù): 75/94頁(yè)
文件大小: 0K
描述: IC PIC MCU FLASH 256X12 8DFN
標(biāo)準(zhǔn)包裝: 150
系列: PIC® 10F
核心處理器: PIC
芯體尺寸: 8-位
速度: 4MHz
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 3
程序存儲(chǔ)器容量: 384B(256 x 12)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 16 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 8-VFDFN 裸露焊盤(pán)
包裝: 管件
配用: AC164334-ND - MODULE SOCKET FOR 8L 2X3MM DFN
AC103003-ND - BOARD DEMO PIC10F CAP TOUCH
AC163020-2-ND - ADAPTER PROGRAM PIC10F 2X3 DFN
78
AT89/83EB5114
4311C–8051–02/08
The following procedure is used to read the Hardware Security space and is
summarized in Figure 37:
Map the Hardware Security space by writing 04h in FCON register.
Read the byte in Accumulator by executing MOVC A,@A+DPTR with A= 0 &
DPTR= 0000h.
Clear FCON to unmap the Hardware Security Byte.
Figure 37. Reading Procedure
Flash Protection from Parallel
Programming
The three lock bits in Hardware Security Byte are programmed according to Table 58,
will provide different level of protection for the on-chip code and data located in flash
memory.
The only way for write this bits are the parallel mode.
Table 58. Program Lock Bit
WARNING: Security level 2 and 3 should only be programmed after Flash and Core
verification.
Flash Spaces Reading
Flash Spaces Mapping
FCON= 00000xx0b
Data Read
DPTR= Address
ACC= 0
Exec: MOVC A, @A+DPTR
Erase Mode
FCON = 00h
Program Lock Bits
Protection Description
Security
level
LB1
LB0
1
U
No program lock feature enabled.
2
U
P
Writing Flash data from programmer is disabled but still allowed from
internal code execution.
3
P
U
Writing and reading Flash data from programmer is disabled but still
allowed from internal code execution.
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