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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： | 13/96页 |
| 文件大小： | 1285K |
| 代理商： | C515C-LM |
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C515C
Data Sheet
9
2003-02
XTAL1
37
O
XTAL1
Output of the inverting oscillator amplifier.
Port 2
is an 8-bit quasi-bidirectional I/O port with internal
pullup resistors. Port 2 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 2 pins being externally pulled low will source
current (
I
IL
, in the DC characteristics) because of
the internal pullup resistors.
Port 2 emits the high-order address byte during
fetches from external program memory and during
accesses to external data memory that use 16-bit
addresses (MOVX @DPTR). In this application it
uses strong internal pullup resistors when issuing
1's. During accesses to external data memory that
use 8-bit addresses (MOVX @Ri), port 2 issues the
contents of the P2 special function register.
CPU Running Condition
This output pin is at low level when the CPU is
running and program fetches or data accesses in
the external data memory area are executed. In idle
mode, hardware and software power down mode,
and with an active RESET signal CPUR is set to
high level.
CPUR can be typically used for switching external
memory devices into power saving modes.
The
Program Store Enable
output is a control signal that enables the external
program memory to the bus during external fetch
operations. It is activated every six oscillator
periods, except during external data memory
accesses. The signal remains high during internal
program execution.
P2.0-P2.7
38-45
I/O
CPUR
46
O
PSEN
47
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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