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LM8330TMX/NOPB

更新时间： 2024-11-25 11:11:55
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德州仪器 - TI 控制器
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55页 1228K
描述
具有 GPIO、PWM 和 IEC61000 ESD 保护的 I2C 兼容键盘控制器 | YFQ | 25 | -30 to 85

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LM8330TMX/NOPB 数据手册

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LM8330  
www.ti.com  
SNVS839A –JUNE 2012–REVISED MARCH 2013  
LM8330 I2C-Compatible Keypad Controller with GPIO, PWM, and IEC61000 ESD Protection  
Check for Samples: LM8330  
1
FEATURES  
–
Debounce Time for Reliable Key Event  
Polling  
2
•
KEY FEATURES  
–
–
Configuration of General Purpose I/O Ports  
–
–
–
Keypad Matrices of up to of 8 x 12 Keys,  
Plus 8 Special Function (SF) Keys, for a  
Full 104 Key Support.  
Various Initialization Options (Keypad Size,  
etc.)  
•
KEY DEVICE FEATURES  
Supports General-purpose I/O Expansion  
on Pins Not Otherwise Used for Keypad or  
PWM Output.  
–
–
–
–
1.8V ±10% Single-supply Operation  
On-chip Power-on Reset (POR)  
−30°C to +85°C Temperature Range  
Keypad Matrix and Dedicated Key Support:  
–
–
16-Event Keycode Buffer  
Robust IEC ESD Protection: ±8 kV Direct  
Contact on KPX[7:0] and KPY[10:0] Pins  
4-Event Multiple Key Storage Registers  
–
–
Internal Oscillator, No External Clock  
Required.  
I2C-compatible ACCESS.bus Slave Interface  
Standard (100 kHz) and Fast (400 kHz)  
Modes:  
–
25-pin DSBGA Package Size: 2 mm x 2 mm  
x 0.6 mm (0.4 mm Pitch)  
APPLICATIONS:  
•
•
•
Mobile Phones  
–
–
–
7-bit and 10-bit Addressing  
Programmable Slave Address  
(Default 7-bit 0x88, 10-bit 0x088)  
Qwerty Keyboard  
Universal Remote  
DESCRIPTION  
–
Three Host-programmable PWM Outputs  
The LM8330 I/O - Expander and Keypad Controller is  
a dedicated device designed to unburden a host  
processor from scanning a matrix-addressed keypad  
and to provide flexible and general purpose, host  
–
–
–
Smooth LED Brightness Modulation  
Dedicated 31-command Script Bugger  
Register-based Command Interpreter  
with Auto-increment Addressing  
programmable  
input/output  
functions.  
Three  
independent Pulse Width Modulation (PWM) timer  
outputs are provided for dynamic LED brightness  
modulation.  
–
–
Key Events, Errors, and Dedicated  
Hardware Interrupts, Request Host Service  
by Asserting an IRQ Output  
It communicates with a host processor through an  
I2C-compatible ACCESS.bus serial interface. It can  
communicate in Standard (100 kHz) and Fast-Mode  
(400 kHz) in slave Mode only.  
Ultra-Low-Power Operation  
–
–
–
Automatic HALT Mode: 1.5 µA (typ.)  
Active Supply Current: 23 µA (typ.)  
Configurable Wake-Up from HALT  
Operation  
All available input/output pins can alternately be used  
as an input or an output in a keypad matrix or as a  
host-programmable general-purpose input or output.  
–
IEC61000-4-2 ESD Protection on KPX[7:0]  
and KPY[10:0] pins  
Any pin programmed as an input can also sense  
hardware interrupts. The interrupt polarity (“high-to-  
low” or “low-to-high” transition) is thereby  
programmable.  
–
–
ESD Glitch Filter on RESETN Input  
External Reset for System Control  
•
HOST-CONTROLLED FEATURES  
The LM8330 follows a predefined register-based set  
–
–
–
Reset Input for System Control  
of commands. Upon startup (power-on)  
a
PWM Scripting for Three PWM Outputs  
configuration file must be sent from the host to set up  
the hardware of the device.  
Period of Inactivity That Triggers Entry into  
HALT Mode  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2012–2013, Texas Instruments Incorporated  
1234567...55

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LM8330TMX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM8330TME/NOPB TI

完全替代

 具有 GPIO、PWM 和 IEC61000 ESD 保护的 I2C 兼容键盘控制器 |

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