DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD16675A
1/34, 1/36 DUTY LCD CONTROLLER/DRIVER
The
µ
PD16675A is a driver containing a RAM capable of full-dot LCD display. A single
µ
PD16675A IC chip can
operate a full-dot (up to 128-by-32 dots) LCD and two-line (upper & lower) pictograph display.
This IC is ideal for Kanji character or Chinese character pagers, displaying 16-by-16 dots per character.
FEATURES
• LCD driver with built-in display RAM
• Can operate on a single 3-V power supply
• Booster circuit incorporated: Switchable between 2X & 3X
• Dot display RAM: 128
×
32 bits
• Pictographic display RAM (portion of two lines): 128
×
2 bits
• Pictographic display RAM duty changeable: 1/34 and 2/36 duties
• Output: 128 segments & 34 commons
• Data input based on serial & 4-/8-bit parallel switchover
• Split resistor incorporated
• Oscillation circuit incorporated
ORDERING INFORMATION
Part Number
Package
Chips/wafer (Matched COG mounting)
2-side standard TCP (Output OLB: 0.25 mm pitch)
TCP (TAB)
µ
PD16675AP/W
µ
PD16675AN-051
µ
PD16675AN-xxx
Purchasing the above products in terms of chips per wafer requires an exchange of other documents as well,
including a memorandum on the product quality. Therefore, those who are interested in this regard are advised to
contact an NEC sales representative for further details.
The information in this document is subject to change without notice.
Document No. S11195EJ1V0DS00 (1st edition)
Date Published July 1998 NS CP (K)
Printed in Japan
©
1996
µ
PD16675A
CONTENTS
1. PIN FUNCTIONS .................................................................................................................................... 6
1.1
1.2
1.3
Power System............................................................................................................................................... 6
Logic System................................................................................................................................................ 6
Driver System ............................................................................................................................................... 8
2. VOLTAGE CONTROL CIRCUIT ............................................................................................................ 8
3. LCD DISPLAY ........................................................................................................................................ 9
4. GROUP ADDRESSES.......................................................................................................................... 10
4.1
4.2
4.3
Dot Display ................................................................................................................................................. 10
Pictographic Display.................................................................................................................................. 11
Blink Data.................................................................................................................................................... 12
5. COMMAND ........................................................................................................................................... 13
5.1
5.2
5.3
Basic Form.................................................................................................................................................. 13
Chip Address Register (CAR) ................................................................................................................... 13
Command Register .................................................................................................................................... 14
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.4
Reset ............................................................................................................................................... 14
Display ON/OFF .............................................................................................................................. 14
Standby ........................................................................................................................................... 14
Duty setting...................................................................................................................................... 15
Master/slave setting......................................................................................................................... 15
Blink setting ..................................................................................................................................... 15
Data R/W mode ............................................................................................................................... 16
Test mode........................................................................................................................................ 16
D/A converter setting ....................................................................................................................... 16
Address Register ....................................................................................................................................... 17
6. RESETTING.......................................................................................................................................... 18
7. COMMUNICATION FORMAT .............................................................................................................. 19
7.1
Serial ........................................................................................................................................................... 19
7.1.1
7.1.2
7.1.3
7.2
7.2.1
7.2.2
Reception 1 (Command/data write: 1 byte) ..................................................................................... 19
Reception 2 (Command/data write: 2 bytes or more) ...................................................................... 19
Transmission (Command/data read) ............................................................................................... 19
8-bit parallel interface ...................................................................................................................... 20
4-bit parallel interface ...................................................................................................................... 20
Parallel ........................................................................................................................................................ 20
8. CPU ACCESS EXAMPLES .................................................................................................................. 21
8.1
8.2
8.3
8.4
Initialize and Data Write............................................................................................................................. 21
Change Display Data and Pictographic Data (All Data are Changed) ................................................... 23
Read Display Data and Pictograph Data .................................................................................................. 24
Blink Data Setting ...................................................................................................................................... 25
9. ELECTRICAL CHARACTERISTICS .................................................................................................... 26
4
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
