78M6612 Maxim, 78M6612 Datasheet - Page 23

• Manufacturer Part Number: 78M6612
• Description: The Teridian™ 78M6612 is a highly integrated, single-phase, power and energy measurement and monitoring system-on-chip (SoC) that includes a 32-bit compute engine (CE), an MPU core, RTC, and flash
• Manufacturer: Maxim

DS_6612_001
3.5 Connecting LCDs
The 78M6612 has an on-chip LCD controller capable of controlling static or multiplexed LCDs.
shows the basic connection for an LCD.
The LCD segment pins can be organized in the following groups:
•
•
•
•
3.6 Connecting I
I
shown in
Pull-up resistors of roughly 10 kΩ to V3P3D should be used for both SCL and SDA signals. The
DIO_EEX register in I/O RAM must be set to 01 in order to convert the DIO pins DIO4 and DIO5 to I
pins SCL and SDA.
Rev 2
2
C EEPROMs or other I
Seventeen pins are dedicated LCD segment pins (SEG0 to SEG13, SEG16 to SEG18).
Four pins are dual-function pins CKTEST/SEG19, E_RXTX/SEG38, E_TCLK/SEG33, and
E_RST/SEG32.
Fourteen pins are available as combined DIO and segment pins SEG24/DIO4 to SEG31/DIO11,
SEG34/DIO14 to SEG37/DIO17, SEG39/DIO19, and SEG40/DIO20.
The QFN-68 package adds an additional combination pin, SEG41/DIO21. Also adds two additional
LCD segment pins, SEG13 and SEG14.
Figure
12.
2
C EEPROMs
2
C compatible devices should be connected to the DIO pins DIO4 and DIO5, as
78M6612
Figure 12: I
.
Figure 11: Connecting LCDs
78M6612
DIO4
DIO4
DIO5
DIO5
2
C EEPROM Connection
10k Ω
10k Ω
10k Ω
10k Ω
EEPROM
EEPROM
LCD
SCL
SCL
SDA
SDA
V3P3D
V3P3D
segments
commons
78M6612 Data Sheet
Figure 11
2
C
23