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| 型号： | C515C-LM |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 8位微控制器 |
| 英文描述： | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| 中文描述： | 8位微控制器与2/4/8K字节在系统可编程闪存 |
| 文件页数： | 14/96页 |
| 文件大小： | 1285K |
| 代理商： | C515C-LM |
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C515C
Data Sheet
10
2003-02
ALE
48
O
The
Address Latch Enable
output is used for latching the address into external
memory during normal operation. It is activated
every six oscillator periods, except during an
external data memory access. ALE can be switched
off when the program is executed internally.
External Access Enable
When held high, the C515C executes instructions
always from the internal ROM. When held low, the
C515C fetches all instructions from external
program memory.
Note: For the ROM protection version EA pin is
latched during reset.
Port 0
is an 8-bit open-drain bidirectional I/O port.
Port 0 pins that have 1's written to them float, and in
that state can be used as high-impedance inputs.
Port 0 is also the multiplexed low-order address and
data bus during accesses to external program and
data memory. In this application it uses strong
internal pullup resistors when issuing 1's.
Port 0 also outputs the code bytes during program
verification in the C515C. External pullup resistors
are required during program verification.
Port 5
is an 8-bit quasi-bidirectional I/O port with internal
pullup resistors. Port 5 pins that have 1's written to
them are pulled high by the internal pullup resistors,
and in that state can be used as inputs. As inputs,
port 5 pins being externally pulled low will source
current (
I
IL
, in the DC characteristics) because of
the internal pullup resistors.
Port 5 can also be switched into a bidirectional
mode, in which CMOS levels are provided. In this
bidirectional mode, each port 5 pin can be
programmed individually as input or output.
EA
49
I
P0.0-P0.7
52-59
I/O
P5.0-P5.7
67-60
I/O
Table 2
Symbol
Pin Definitions and Functions
(cont’d)
Pin Number
I/O
1)
Function
P-MQFP-80-1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| C515-LN | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C515-LN/1RN | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C515S-250MA | 制造商:COOPER BUSSMANN 功能描述:Fuse 0.25A 250V Slow Blow 2-Pin Axial Through Hole |
| C515S-2A | 制造商:Cooper Bussmann 功能描述: |
| C515S-375-R | 制造商:Cooper Bussmann 功能描述: |
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