參數(shù)資料
型號: C505
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數(shù): 54/88頁
文件大小: 1224K
代理商: C505
C505/C505C/C505A/C505CA
Data Sheet
50
12.00
OTP Memory Operation (C505A-4E and C505CA-4E only)
The C505A-4E/C505CA-4E contains a 32K byte one-time programmable (OTP) program memory.
With the C505A-4E/C505CA-4E fast programming cycles are achieved (1 byte in 100
μ
sec). Also
several levels of OTP memory protection can be selected.
For programming of the device, the C505A-4E/C505CA-4E 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 C505A-4E/C505CA-4E operates as a slave device similar as an EPROM
standalone memory device and must be controlled with address/data information, control lines, and
an external 11.5V programming voltage.
Figure 26
shows the pins of the C505A-4E/C505CA-4E
which are required for controlling of the OTP programming mode.
Figure 26
Programming Mode Configuration
Port 0
D0-D7
V
DD
V
SS
C505A-4E
C505CA-4E
PROG
PRD
A0-A7 /
A8-A14
PALE
Port 2
EA/V
PP
PMSEL0
PMSEL1
PSEL
RESET
PSEN
XTAL1
XTAL2
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