參數資料
型號: T89C51CC01
廠商: Atmel Corp.
英文描述: Enhanced 8-bit MCU with CAN controller and Flash
中文描述: 增強型8位微控制器的CAN控制器和Flash
文件頁數: 45/170頁
文件大小: 1927K
代理商: T89C51CC01
45
A/T89C51CC01
4129L–CAN–08/05
Figure 24.
Reading Procedure
Note:
1. aa = 10 for the Hardware Security Byte.
Flash Protection from Parallel
Programming
The three lock bits in Hardware Security Byte (see "In-System-Programming" section)
are programmed according to Table 27 provide different level of protection for the on-
chip code and data located in FM0 and FM1.
The only way to write these bits are the parallel mode. They are set by default to level 4
Table 27.
Program Lock bit
Program Lock bits
U: unprogrammed
P: programmed
WARNING: Security level 2 and 3 should only be programmed after Flash and Core
verification.
Preventing Flash Corruption
See the “Power Management” section.
Flash Spaces Reading
Flash Spaces Mapping
FCON = 0000aa0b
(1)
Data Read
DPTR = Address
ACC = 0
Exec: MOVC A, @A+DPTR
Clear Mode
FCON = 00h
Program Lock Bits
Protection Description
Security
Level
LB0
LB1
LB2
1
U
U
U
No program lock features enabled. MOVC instruction executed from
external program memory returns non coded data.
2
P
U
U
MOVC instructions executed from external program memory are barred
to return code bytes from internal memory, EA is sampled and latched
on reset, and further parallel programming of the Flash is disabled.
3
U
P
U
Same as 2, also verify through parallel programming interface is
disabled.
4
U
U
P
Same as 3, also external execution is disabled if code roll over beyond
7FFFh
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T89C51CC01CA-7CTIM 功能描述:IC 8051 MCU FLASH 32K 64BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR,WDT 輸入/輸出數:32 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:- 振蕩器型:內部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP(0.600",15.24mm) 包裝:管件