SA8807A Sames, SA8807A Datasheet
SA8807A
Related parts for SA8807A
SA8807A Summary of contents
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... Serial Peripheral Interface (SPI). This LCD driver is ideal for any micro- controller based system requiring a liquid crystal display digits. The SA8807A integrated circuit is available in both 40 pin dual-in-line plastic (DIP-40), as well as 44 pin plastic leaded chip carrier (PLCC-44) package types. ...
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... SA8807A PIN CONNECTIONS VS[15] VS[16] VS[17] VS[18] VS[19] N. VS[20] VS[21] VS[22] VS[23] DR-00581 BLOCK DIAGRAM 2/14 Package: PLCC-44 VS[4] VS[3] VS[2] VS[1] VS[0] N.C. VR[3] VR[2] VR[1] VR[0] N.C. ...
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... Extended Operating Temperature Range available on request. Symbol Min -150 PIN T -40 STG T - Min Typ V -V 3.0 5 1/3V OFF DD Max 6.0 +150 +125 + unless otherwise DD SS Max Unit 5.5 V 100 µA & & 2 SA8807A Unit V mA °C °C Condition 3/14 ...
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... SA8807A SERIAL INTERFACE TIMING Ref Characteristic No 1 Chip Enable set-up time 2 Chip Enable clock hold time 3 Clock width high 4 Clock width low 5 Data In to clock set-up time 6 Clock to Data propagation delay 7 Chip Disable to output high Z 8 Data In after clock hold time ...
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... VS[18 VS[19] Ground Positive Supply Voltage DD (SPI) Serial clock input (SPI) Master Out: Slave In (SPI) Master In: Slave Out Chip Enable input Reset input Divider Enable Oscillator or clock input Backplane enable input V1 LCD Voltage input (Contrast) LCD segment driver outputs SA8807A 5/14 ...
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... FUNCTIONAL DESCRIPTION The SA8807A is a CMOS Liquid Crystal Driver integrated circuit for displays having track multiplexed backplanes and LCD segments. Data exchange is performed through a Serial Peripheral Interface (SPI). 1. Serial Peripheral (SPI) Interface The SPI Interface wire interface. ...
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... Diagram 1 2. Addressing and Read/Write Mode Select To access the SA8807A, a control byte has to be received first (after CE goes active). This byte contains the information to initiate either a Read or Write mode and an address. The following bytes contain data until CE becomes inactive. Address/Control Byte: The Address and Control Byte is the first byte sent after CE goes active ...
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... SA8807A Read/Write Data: The Read/Write Data follows the Address/Control byte. SCK may be either polarity. 8/14 ...
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... LCD Display The SA8807A LCD driver is capable of driving backplane, 12 digit (7 segment) display, plus decimal points. In the case back plane display, typically the most significant digit is addressed by columns VS[22] and VS[23] and the least significant digit, by VS[0] and VS[1]. The display segments addressed via the column outputs are given in a typical configuration below: The data in memory is constantly being displayed on the liquid crystal display ...
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... SA8807A Diagram 2: LCD Driving Signals 4. LCD Character Mapping The device contains bit display memory. Each byte is divided into bits, for driving two adjacent segment outputs. The lower four bits ( & 0) contain the data for segments VS[0], VS[2], ...... VS[20] and VS[22]. The upper four bits ( & 4) contain the data segments VS[1], VS[3], ...
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... C = 7µF.1Hz Required oscillator frequency The backplane multiplex rate is f/8 for 4-backplane mode and f/6 for 3-backplane mode. TYPICAL APPLICATION The Application Circuit (Figure 1) shows the connections for a typical application when using a 12 digit (7 segment) display, plus decimal points. SA8807A 11/14 ...
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... SA8807A Figure 1: LCD Driver Application 12/14 ...
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... ORDERING INFORMATION Part Number SA8807APA SA8807AFA Package DIP-40 PLCC-44 SA8807A 13/14 ...
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... SA8807A Disclaimer: The information contained in this document is confidential and proprietary to South African Micro- Electronic Systems (Pty) Ltd ("SAMES") and may not be copied or disclosed to a third party, in whole or in part, without the express written consent of SAMES. The information contained herein is current as of the date of publication ...