UPD16454AN NEC [NEC], UPD16454AN Datasheet
UPD16454AN
Related parts for UPD16454AN
UPD16454AN Summary of contents
Page 1
The PD16454A is a single-chip controller/driver for dot matrix LCD, enabling the display alphanumerical and kana characters and symbols (24 characters On-chip charge pump-type DC/DC converter that enables the PD16454A to operate on a single 5-V ...
Page 2
Instruc- Instruc- tion tion 8 register decoder 8 (IR) CLK buffer Data register RESET (DR) TEST Character generator RAM BF Busy flag C (+) DC/DC converter ...
Page 3
PIN FUNCTION Symbol Pin No. RS 138 E 139 TEST 140 BF 145 DB 141 to 144 RESET 137 CLK 146 COM 128 to 134 SEG 127 to 68 ...
Page 4
PIN CONFIGURATION (Pad Configuration) 158 COM 14 COM 8 SEG 61 SEG 62 4 135 134 PD16454A COM 7 COM 1 SEG 1 SEG 2 ...
Page 5
BLOCK FUNCTIONS (1) Registers (IR, DR) This LCD contains both an 8-bit instruction register (IR) and an 8-bit data register (DR). The IR register stores display clear instruction codes and display data RAM (DDRAM) and character generaotor RAM (CGRAM) addresses. ...
Page 6
Fig.1 Correspondence of DDRAM address and display position on LCD 1st digit 1st line ...
Page 7
Fig.3. Character Code and Character Pattern Correspondence Upper 4 bits 0000 0010 0011 0100 Lower 4 bits CG RAM XXXX0000 (1) (2) XXXX0001 (3) XXXX0010 (4) XXXX0011 (5) XXXX0100 (6) XXXX0101 (7) XXXX0110 (8) XXXX0111 (1) XXXX1000 (2) XXXX1001 (3) ...
Page 8
Character generator RAM (CGRAM) CGRAM is a RAM that the user can use to freely define character patterns. Eight types of 5 pattern definitions are possible. The CGRAM address values (character codes) of A10 Fig.2 are ...
Page 9
INSTRUCTIONS The instructions for this LSI are shown in Table 1 below. Instruction Display On/Off CGRAM Address Set DDRAM Address Set CGRAM/DDRAM 1 Data Write However, because CGRAM ...
Page 10
ABSOLUTE MAXIMUM RATINGS (T Parameter Symbol Logic Supply Voltage V CC Driver Input Voltage V I Logic Output Voltage V O1 Driver Supply Voltage V DD Driver’s Driver Input Voltage Driver’s Driver Output Voltage V 1 ...
Page 11
DC CHARACTERISTICS ( + Parameter Symbol High-Level Input Voltage 1 V IH1 Low-Level Input Voltage 1 V IL1 High-Level Input Voltage 2 V IH2 Low-Level Input Voltage 2 V IL2 Hysteresis voltage V H ...
Page 12
AC CHARACTERISTICS ( + Parameter Symbol Operating Frequency f C Enable Cycle Time t CYCE Enable Pulse Width Setup Time t RSES RS E Hold Time t RSEH Data Setup ...
Page 13
OSCILLATION FREQUENCY and LCD FRAME FREQUENCY CORRESPONDENCE The correspondence between the oscillation frequency of 250 kHz and the LCD frame frequency is shown in Fig.4 below. Fig.4 Oscillation Frequency and LCD Frame Frequency Correspondence 120 Clocks ...
Page 14
REFERENCE 1 : STANDARD TCP DRAWING ( PD16454AN-051) 13.475 P0.4 0. 16.0 0.035 W0.16 0.03 Note 1. Measurements between brackets are for referency only. 2. Non-specified tolerances are 0.05 mm. 3. This drawing is viewed from wire-patterned face. ...
Page 15
W D Symbol Size (mm) *:Tape width A 405 2.0 B 105 C 25.9 0.5 D 17.9 0.5 +1 (35)* 37 1.5 W (48)* 50 1.5 W (70 ...
Page 16
No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. ...