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參數(shù)資料
| 型號(hào)： | MM58348 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | MM58348 High Voltage Display Driver |
| 中文描述： | MM58348高電壓顯示驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 3/6頁(yè) |
| 文件大小： | 142K |
| 代理商： | MM58348 |
Connection Diagrams
Dual-In-Line Package
TL/F/5601–2
Top View
FIGURE 2
Order Number MM58348N
See NS Package Number N40A
Plastic Chip Carrier
TL/F/5601–8
Top View
Order Number MM58348V
See NS Package Number V44A
Functional Description
This product is specifically designed to drive multiplexed or
non-multiplexed high voltage alphanumeric or dot matrix
vacuum fluorescent (VF) displays. Character generation is
done externally in the microprocessor, with a serial data
path to the display driver. The MM58348 uses two signals,
DATA IN and CLOCK, with a format of a leading ‘‘1’’ fol-
lowed by the 35 data bits, hence allowing data transfer with-
out an additional signal. A block diagram of the MM58348 is
shown in Figure 1.
Figure 2 shows the pinout of the MM58348 device, where
output 1 (pin 18) is equivalent to bit 1, (i.e., the first bit of
data to be loaded into the shift register following the start
bit). A logic ‘‘1’’ at the input will turn on the corresponding
display digit/segment/dot output.
A significant reduction in discrete board components can be
achieved by use of the MM58348, because external pull-
down resistors are not required. Due to the nature of the
output stage, both its on and off impedance values vary as a
function of the display voltage applied. However, Figure 3a
and 3b show that this output impedance will remain con-
stant for a fixed value of display voltage.
TL/F/5601–3
FIGURE 3a. Output Impedance Off
TL/F/5601–4
FIGURE 3b. Output Impedance On
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MM58348N | DUST CAP |
| MM58348V | MM58348 High Voltage Display Driver |
| MM5837 | Digital Noise Source |
| MM5837N | Digital Noise Source |
| MM74C165 | Parallel-Load 8-Bit Shift Register(并行載入8位移位寄存器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM58348N | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:MM58348 High Voltage Display Driver |
| MM58348V | 制造商:National Semiconductor Corporation 功能描述: 制造商:Texas Instruments 功能描述: |
| MM5837 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Digital Noise Source |
| MM5837N | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Digital Noise Source |
| MM5Z10 | 制造商:HTSEMI 制造商全稱(chēng):Shenzhen Jin Yu Semiconductor Co., Ltd. 功能描述:SILICON PLANAR ZENER DIODES |
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