参数资料
型号: MAX6959BAPE+
厂商: Maxim Integrated
文件页数: 1/19页
文件大小: 0K
描述: IC DRVR DSPL LED 16-DIP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 25
显示器类型: LED
配置: 7 段 + 2 个信号器
接口: SMBus(2 线/I²C)
数字或字符: 4 位数字
电流 - 电源: 5.9mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 通孔
封装/外壳: 16-DIP(0.300",7.62mm)
供应商设备封装: 16-PDIP
包装: 管件
19-2634; Rev 1; 11/05
2-Wire Interfaced, 3V to 5.5V, 4-Digit,
9-Segment LED Display Drivers with Keyscan
General Description
Features
The MAX6958/MAX6959 compact multiplexed com-
mon-cathode display drivers interface microprocessors
to seven-segment numeric LED digits, or discrete LEDs
through an SMBus?- and I 2 C-compatible 2-wire serial
interface. The 2-wire serial interface uses fixed
0.8V/2.1V logic thresholds for compatibility with 2.5V
and 3.3V systems when the display driver is powered
from a 5V supply.
The MAX6958/MAX6959 drive up to four 7-segment
digits, with decimal points, plus four discrete LEDs, or
four 7-segment digits and eight discrete LEDs if the
digits’ decimal points are not used, or up to 36 discrete
LEDs. The MAX6959 also includes two input ports, one
or both of which may be configured as a key-switch
reader, which automatically scans and debounces a
matrix of up to eight switches. Key-switch status is
obtained by polling internal status registers or by con-
figuring the MAX6959 interrupt output.
Other on-chip features include a hexadecimal font for
seven-segment displays, multiplex scan circuitry,
?
?
?
?
?
?
?
?
?
?
?
?
?
400kbps 2-Wire Serial Interface
3V to 5.5V Operation
Drive 4 Digits plus 4 or 8 Discrete LEDs
Drive Common-Cathode LED Digits
23mA Constant-Current LED Segment Drive
Hexadecimal Decode/No-Decode Digit Selection
64-Step Digital Brightness Control
Slew-Rate-Limited Segment Drivers Reduced EMI
Debounces Up to Eight Switches with n-Key
Rollover (MAX6959 Only)
IRQ Output When a Key Input Is Debounced
(MAX6959 Only)
20μA Low-Power Shutdown (Data Retained)
Automotive Temperature Range (-40°C to +125°C)
Compact 16-Pin PDIP and QSOP Packages
Ordering Information
anode and cathode drivers, and static RAM that stores
each digit. The peak segment current for the display
PART
TEMP
RANGE
SLAVE PIN-
ADDRESS PACKAGE
PKG
CODE
digits is set internally to 23mA. Display intensity is
adjusted using a 64-step internal digital brightness con-
trol. The MAX6958/MAX6959 include a low-power shut-
down mode, a scan-limit register that allows the user to
display from one to four digits, and a test mode, which
MAX6958 AAEE
MAX6958AAPE
-40 ° C to
+125 ° C
-40 ° C to
+125 ° C
0111000
0111000
16 QSOP
16 DIP
E16-1
P16-1
forces all LEDs on. The LED drivers are slew-rate-limit-
ed to reduce EMI.
The MAX6958/MAX6959 are available in 16-pin PDIP
and QSOP packages and are fully specified over the
-40°C to +125°C automotive temperature range.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
8
8
8
8
Applications
μ C
SDA
SDA
DIG0–DIG3
SEG0–SEG8
8
SCL
SCL
5V
Set-Top Boxes
Audio/Video Equipment
IRQ
IRQ/SEG9
V+
Panel Meters
White Goods
Vending Machines
Industrial Controls
INPUT1
INPUT2
MAX6959
GND
Key 0
DIG0/SEG0
Key 1
DIG1/SEG1
Key 2
DIG2/SEG2
Key 3
DIG3/SEG3
Pin Configuration, Functional Diagram, and Typical
Application Circuit appear at end of data sheet.
Key 4
Key 5
DIG4/SEG4
DIG5/SEG5
Key 6
DIG6/SEG6
Key 7
SMBus is a trademark of Intel Corp.
DIG7/SEG7
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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