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参数资料
| 型号： | C509-L |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 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 |
| 文件页数： | 8/74页 |
| 文件大小： | 1607K |
| 代理商： | C509-L |
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Semiconductor Group
7
09.96
C509-L
P2.0 – P2.7
14-21
I/O
Port 2
is a 8-bit I/O port. 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 1s. During
accesses to external data memory that use 8-bit
addresses (MOVX @Ri), port 2 issues the contents of the
P2 special function register.
P2.0 - P2.7
A8 - A15
Address lines 8 - 15
PSEN / RDF
22
O
Program Store Enable / Read FLASH
The PSEN output is a control signal that enables the
external program memory to the bus during external
code fetch operations. It is activated every third
oscillator period. PSEN is not activated during external
data memory accesses caused by MOVX instructions.
PSEN is not activated when instructions are executed
from the internal Boot ROM or from the XRAM.
In external programming mode RDF becomes active
when executing external data memory read (MOVX)
instructions.
ALE
23
O
Address Latch Enable
This output is used for latching the low byte of the
address into external memory during normal operation.
It is activated every third oscillator period except during
an external data memory access caused by MOVX
instructions.
EA
24
I
External Access Enable
The status of this pin is latched at the end of a reset.
When held at low level, the C509-L fetches all
instructions from the external program memory. For the
C509-L this pin must be tied low.
PRGEN
25
I
External Flash-EPROM Program Enable
A low level at this pin disables the programming of an
external Flash-EPROM. To enable the programming of
an external Flash-EPROM, the pin PRGEN must be held
at high level and bit PRGEN1 in SFR SYSCON1 has to
be set. There is no internal pullup resistor connected to
this pin.
*) I = Input
O = Output
Table 1
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
I/O*)
Function
相关PDF资料 |
PDF描述 |
|---|---|
| C509-L | 8-Bit CMOS Microcontroller |
| C513A-2RM | 8-Bit CMOS Microcontroller |
| C513A-HN | 8-Bit CMOS Microcontroller |
| C511 | 8-Bit CMOS Microcontroller |
| C511-RN | 8-Bit CMOS Microcontroller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| C509-L_97 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
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| C50A_06 | 制造商:WTE 制造商全称:Won-Top Electronics 功能描述:50A AUTOMOTIVE CELL DIODE |
| C50A1P | 功能描述:CIRCUIT BRKR 50A 1POLE RAIL MNT RoHS:是 类别:过电压，电流，温度装置 >> 断路器 系列:- 标准包装:20 系列:T12 断路器类型:热敏式 电压:240VAC，28VDC 电流 - 跳闸(It):300mA 极数:1 触动器类型:推推型 安装类型:面板安装 其它名称:4410.07944410.0794-ND |
| C50A1P-80VDC | 功能描述:CIRCUIT BRKR 50A 1POLE DINRAIL RoHS:是 类别:过电压，电流，温度装置 >> 断路器 系列:- 标准包装:20 系列:T12 断路器类型:热敏式 电压:240VAC，28VDC 电流 - 跳闸(It):300mA 极数:1 触动器类型:推推型 安装类型:面板安装 其它名称:4410.07944410.0794-ND |
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