SA9109B
V
DD
IIN
V
SS
DD
C U R R E N T
S E N S OR
IN P U TS
A
I
V
IIP
V
V
SS
DD
IV N
V OLTA G E
S E N S OR
IN P U T
V
SS
A
V
GN D
DR- 01254
3. LCD Driver
The SA9109B has an on-chip LCD driver capable of driving a 4 backplane, 7 digit
(7 segment) display, as well as 6 announciators.
The backplane repetition frequency is approximately 90Hz.
The most significant digit is addressed by columns S[13] and S[12] and the least
significant digit by S[1] and S[0]. Announciators for the 4 tariff registers, the total
register and energy direction are available on the `h' segment of the 6 least
significantdigits. Thedisplaysegmentsareaddressedviathecolumnoutputsgiven
in the table below:
7/18
sames
SAMES [ SAMES ]
