參數(shù)資料
型號： MC68HC05C12ACFN
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 103/156頁
文件大?。?/td> 756K
代理商： MC68HC05C12ACFN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Input/Output (I/O) Ports
General Release Specification
MC68HC05C12A — Rev. 3.0
50
Input/Output (I/O) Ports
MOTOROLA
7.4 Port B
Port B is an 8-bit bidirectional port. The port B data register is at $0001
and the data direction register (DDR) is at $0005. Reset does not affect
the data registers, but clears the data direction registers, thereby
returning the ports to inputs. Writing a one to a DDR bit sets the
corresponding port pin to output mode. Each of the port B pins has a
mask programmable interrupt capability. This interrupt option also
enables a pullup device when the pin is configured as an input (see
Figure 7-1). The edge or edge and level sensitivity of the IRQ pin also
will pertain to the enabled port B pins via mask options. Be careful when
using port B pins that have the pullup enabled. Before switching from an
output to an input, the data should be preconditioned to a one to prevent
an interrupt from occurring.
Figure 7-1. Port B Pullup Option
7.5 Port C
Port C is an 8-bit bidirectional port. The port C data register is at $0002
and the data direction register (DDR) is at $0006. Reset does not affect
the data registers, but clears the data direction registers, thereby
returning the ports to inputs. Writing a one to a DDR bit sets the
corresponding port bit to output mode. PC7 has a high current sink and
source capability.
PB0
VDD
DDR BIT
NORMAL PORT CIRCUITRY
AS SHOWN IN
FROM ALL OTHER PORT B PINS
IRQ
SCHMITT
TRIGGER
TO INTERRUPT
LOGIC
MASK OPTION
FIGURE 7-2
相關PDF資料
PDF描述
MC68HSC05C12AFN 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05C12ACP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HCL05C12AFB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HSC05C12AFB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44
MC68HSC05C12AB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP42
相關代理商/技術參數(shù)
參數(shù)描述
MC68HC05C12B 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C12CP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C12P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNITS
MC68HC05C4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcomputers
MC68HC05C8 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PROGRAMMING REFRERENCE GUIDE
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*