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參數(shù)資料
| 型號(hào)： | MAX7219 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Serially Interfaced, 8-Digit LED Display Drivers |
| 中文描述： | 串行接口、8位、LED顯示驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 186K |
| 代理商： | MAX7219 |
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M
S erially Interfac ed, 8-Digit LED Display Drivers
_______________________________________________________________________________________
5
______________________________________________________________Pin Desc ription
_________________________________________________________Func tional Diagram
NAME
FUNCTION
1
DIN
Serial-Data Input. Data is loaded into the internal 16-bit shift register on CLK’s rising edge.
2, 3, 5–8,
10, 11
DIG 0–DIG 7
Eight-Digit Drive Lines that sink current from the display common cathode. The MAX7219 pulls
the digit outputs to V+ when turned off. The MAX7221’s digit drivers are high-impedance when
turned off.
PIN
4, 9
GND
Ground (both GND pins must be connected)
12
LOAD
(MAX7219)
18
ISET
Connect to V
DD
through a resistor (R
SET
) to set the peak segment current (Refer to Selecting
R
SET
Resistor section).
Positive Supply Voltage. Connect to +5V.
14–17,
20–23
SEG A–SEG G,
DP
13
CLK
CS
(MAX7221)
24
DOUT
Serial-Data Output. The data into DIN is valid at DOUT 16.5 clock cycles later. This pin is used
to daisy-chain several MAX7219/MAX7221’s and is never high-impedance.
19
V+
( ) MAX7221 ONLY
V+
8
8
8
8
4
R
SET
LOAD (CS)
DIN
DOUT
CLK
(MSB)
(LSB)
D0
SEG A–SEG G, DP
DIG 0–DIG 7
SHUTDOWN REGISTER
MODE REGISTER
INTENSITY REGISTER
SCAN-LIMIT REGISTER
DISPLAY-TEST REGISTER
INTENSITY
PULSE-
WIDTH
MODULATOR
MULTIPLEX
SCAN
CIRCUITRY
ADDRESS
REGISTER
DECODER
8x8
DUAL-PORT
SRAM
8
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12
DIGIT DRIVERS
D13 D14 D15
CODE B
ROM WITH
BYPASS
SEGMENT
CURRENT
REFERENCE
SEGMENT DRIVERS
Load-Data Input. The last 16 bits of serial data are latched on LOAD’s rising edge.
Chip-Select Input. Serial data is loaded into the shift register while
CS
is low. The last 16 bits of
serial data are latched on
CS
’s rising edge.
Serial-Clock Input. 10MHz maximum rate. On CLK’s rising edge, data is shifted into the inter-
nal shift register. On CLK’s falling edge, data is clocked out of DOUT. On the MAX7221, the
CLK input is active only while
CS
is low.
Seven Segment Drives and Decimal Point Drive that source current to the display. On the
MAX7219, when a segment driver is turned off it is pulled to GND. The MAX7221 segment dri-
vers are high-impedance when turned off.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX7219CNG | Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7219ERG | Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7219EWG | Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7221 | Dual 4-Input Positive-AND Gates 14-CDIP -55 to 125 |
| MAX7221CWG | Dual 4-Input Positive-AND Gates 14-CFP -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7219_07 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7219_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7219C | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serially Interfaced, 8-Digit LED Display Drivers |
| MAX7219C/D | 功能描述:LED顯示驅(qū)動(dòng)器 RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX7219CNG | 功能描述:LED顯示驅(qū)動(dòng)器 8-Digit LED Display Driver RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
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