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| 型號： | SAB-C517A-4R24M |
| 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, 24 MHz, MICROCONTROLLER, PQFP100 |
| 文件頁數(shù)： | 8/67頁 |
| 文件大?。?/td> | 479K |
| 代理商： | SAB-C517A-4R24M |
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C517A
Semiconductor Group
8
1997-10-01
XTAL2
12
–
XTAL2
is the input to the inverting oscillator amplifier and input to
the internal clock generator circuits.
To drive the device from an external clock source, XTAL2
should be driven, while XTAL1 is left unconnected.
Minimum and maximum high and low times as well as rise/
fall times specified in the AC characteristics must be
observed.
XTAL1
13
–
XTAL1
is the output of the inverting oscillator amplifier. This pin is
used for the oscillator operation with crystal or ceramic
resonator.
P2.0 - P2.7
14 - 21
I/O
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.
PSEN
22
O
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.
ALE
23
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.
*) I = Input
O = Output
Table 2
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
I/O*)
Function
P-MQFP-100
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAF-C517A-4R24M | 8-Bit CMOS Microcontroller |
| SAB-C517A | 8-bit CMOS MICROCONTROLLER |
| SAF-C517A-LN | 8-bit CMOS MICROCONTROLLER |
| SAH-C517A | 8-bit CMOS MICROCONTROLLER |
| SAF-C517A | 8-bit CMOS MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C517A-4RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C517A-L24M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C517A-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SABC517ALN | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SABC517A-LN | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8 BIT CMOS MICROCONTROLLER |
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