HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 64
HD4074329S
Manufacturer Part Number
HD4074329S
Description
MCU 4-Bit HMCS400 CISC 20KB EPROM 3.3V/5V 64-Pin SDIP
Manufacturer
Renesas Electronics America
Datasheet
1.HD4074329S.pdf
(98 pages)
Specifications of HD4074329S
Package
64SDIP
Family Name
HMCS400
Maximum Speed
4.5 MHz
Ram Size
268 Byte
Program Memory Size
20 KB
Operating Supply Voltage
3.3|5 V
Data Bus Width
4 Bit
Program Memory Type
EPROM
Number Of Programmable I/os
35
On-chip Adc
4-chx8-bit
Operating Temperature
-20 to 75 °C
Number Of Timers
3
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HD404328 Series
LCD Data Area and Segment Data ($050–$067): As shown in figure 39, each bit of the storage area
corresponds to one of four duty cycles. If data is written to an area corresponding to a certain duty cycle, it
is automatically output to the corresponding segments as display data.
60
LCD control register (LCR): $013
LCD mode register (LMR): $014
LCD output register (LOR): $015
3
3
2
2
2
1
1
1
0
0
0
Figure 38 LCD Registers
Initial value: 000, R/W: W
Initial value: 0000, R/W: W
Initial value: 0000, R/W: W
Blank/display
Power switch on/off
Display on/off in watch mode or subactive mode
(not used)
R2/SEG1–SEG4 pin mode selection
R3/SEG5–SEG8 pin mode selection
R4/SEG9–SEG12 pin mode selection
R5/SEG13–SEG16 pin mode selection
Duty cycle selection
Input clock selection
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