參數(shù)資料
型號: SAB-C505C-LM
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, MQFP-44
文件頁數(shù): 54/85頁
文件大?。?/td> 487K
代理商: SAB-C505C-LM
C505L
Data Sheet
52
06.99
OTP Memory Operation
The C505L contains a 32 Kbyte one-time programmable (OTP) program memory. With the C505L
fast programming cycles are achieved (1 byte in 100
μ
s). Also several levels of OTP memory
protection can be selected.
For programming of the device, the C505L must be put into the programming mode. This typically
is done not in-system but in a special programming hardware. In the programming mode the C505L
operates as a slave device similar as an EPROM stand-alone memory device and must be
controlled with address/data information, control lines, and an external 11.5 V programming
voltage.
Figure 26
shows the pins of the C505L which are required for controlling of the OTP
programming mode.
Figure 26
Programming Mode Configuration
MCL04038
C505L
P0.0-7
XTAL1
XTAL2
V
DD
V
SS
EA/
V
PP
PROG
PRD
RESET
PSEN
PSEL
PMSEL1
PMSEL0
PALE
P2.0-7
Port 2
Port 0
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