音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

ICM7217CIPL Datasheet

  • ICM7217CIPL

  • 4-Digit LED Display, Programmable Up/Down Counter

  • 19頁(yè)

  • INTERSIL   INTERSIL

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書(shū)

PDF預(yù)覽

ICM7217
August 1997
4-Digit LED Display,
Programmable Up/Down Counter
Description
The ICM7217 is a four digit, presettable up/down counter with
an onboard presettable register continuously compared to the
counter. The ICM7217 is intended for use in hard-wired
applications where thumbwheel switches are used for loading
data, and simple SPDT switches are used for chip control.
This circuit provides multiplexed 7 segment LED display
outputs, with common anode or common cathode
con鏗乬urations available. Digit and segment drivers are
provided to directly drive displays of up to 0.8 inch
character height (common anode) at a 25% duty cycle. The
frequency of the onboard multiplex oscillator may be
controlled with a single capacitor, or the oscillator may be
allowed to free run. Leading zeros can be blanked. The
data appearing at the 7 segment and BCD outputs is
latched; the content of the counter is transferred into the
latches under external control by means of the Store pin.
The ICM7217 (common anode) and ICM7217A (common
cathode) versions are decade counters, providing a
maximum count of 9999, while the ICM7217B (common
anode) and ICM7217C (common cathode) are intended for
timing purposes, providing a maximum count of 5959.
This circuit provides 3 main outputs; a CARRY/BORROW
output, which allows for direct cascading of counters, a
ZERO output, which indicates when the count is zero, and
an EQUAL output, which indicates when the count is equal
to the value contained in the register. Data is multiplexed to
and from the device by means of a three-state BCD I/O port.
The CARRY/BORROW, EQUAL, ZERO outputs, and the
BCD port will each drive one standard TTL load.
To permit operation in noisy environments and to prevent
multiple triggering with slowly changing inputs, the count
input is provided with a Schmitt trigger.
Input frequency is guaranteed to 2MHz, although the device will
typically run with f
IN
as high as 5MHz. Counting and comparing
(EQUAL output) will typically run 750kHz maximum.
Features
鈥?Four Decade, Presettable Up-Down Counter with
Parallel Zero Detect
鈥?Settable Register with Contents Continuously
Compared to Counter
鈥?Directly Drives Multiplexed 7 Segment Common
Anode or Common Cathode LED Displays
鈥?On-Board Multiplex Scan Oscillator
鈥?Schmitt Trigger On Count Input
鈥?TTL Compatible BCD I/O Port, Carry/Borrow, Equal,
and Zero Outputs
鈥?Display Blank Control for Lower Power Operation;
Quiescent Power Dissipation <5mW
鈥?All Terminals Fully Protected Against Static Discharge
鈥?Single 5V Supply Operation
Ordering Information
PART
NUMBER
ICM7217AIPI
ICM7217CIPl
ICM7217IJI
lCM7217BlJl
TEMP. RANGE
(
o
C)
-25 to 85
-25 to 85
-25 to 85
-25 to 85
PACKAGE
28 Ld PDIP
28 Ld PDIP
28 Ld CERDIP
28 Ld CERDIP
DISPLAY DRIVER
TYPE
Common Cathode
Common Cathode
Common Anode
Common Anode
COUNT OPTION/
MAX COUNT
Decade/9999
Timing/5959
Decade/9999
Timing/5959
PKG. NO.
E28.6
E28.6
F28.6
F28.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
漏
Intersil Corporation 1999
File Number
3167.1
9-12

ICM7217CIPL相關(guān)型號(hào)PDF文件下載

您可能感興趣的PDF文件資料

熱門(mén)IC型號(hào)推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線(xiàn)人工客服

買(mǎi)家服務(wù)：
賣(mài)家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線(xiàn)時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫(kù)提出的寶貴意見(jiàn)，您的參與是維庫(kù)提升服務(wù)的動(dòng)力！意見(jiàn)一經(jīng)采納，將有感恩紅包奉上哦！