HT49R10A-1 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT49R10A-1' PDF : 38 Pages View PDF
HT49R10A-1/HT49C10-1
VA
COM 0
VB
VC
VSS
VA
VB
COM 1
VC
VSS
VA
VB
COM 2
VC
VSS
VA
VB
COM 3
VC
VSS
VA
VB
L C D s e g m e n ts O N
C O M 2 s id e lig h te d
VC
VSS
N o te : 1 /4 d u ty , 1 /3 b ia s , C ty p e : " V A " 3 /2 V L C D , " V B " V L C D , " V C " 1 /2 V L C D
1 /4 d u ty , 1 /3 b ia s , R ty p e : " V A " V L C D , " V B " 2 /3 V L C D , " V C " 1 /3 V L C D
LCD Driver Output
tion: 1/2 bias or 1/3 bias. If 1/2 bias is selected, a capaci-
tor mounted between V2 pin and ground is required. If
1/3 bias is selected, two capacitors are needed for V1
and V2 pins.
Low Voltage Reset/Detector Functions
There is a low voltage detector (LVD) and a low voltage
reset circuit (LVR) implemented in the microcontroller.
These two functions can be enabled/disabled by config-
uration options. Once the LVD option is enabled, the
user can use bit RTCC.3 to enable/disable (1/0) the LVD
circuit and read the LVD detector status (0/1) from bit
RTCC.5; otherwise, the LVD function is disabled.
The LVR has the same effect or function with the exter-
nal RES signal which performs chip reset. During HALT
state, the LVR is disabled.
The definitions of the RTCC register are listed in the fol-
lowing table.
Bit No. Label Read/Write Reset
Function
0~2 RT0~RT2 R/W
111B 8 to 1 multiplexer control inputs to select the real clock prescaler output
3
LVDC
R/W
0 LVD enable/disable (1/0)
4
QOSC
R/W
0
32768Hz OSC quick start-up oscillating
0/1: quickly/slowly start
5
LVDO
R
0
LVD detection output (1/0)
1: low voltage detected
6~7
¾
¾
¾ Unused bit, read as ²0²
RTCC (09H) Register
Rev. 1.50
20
July 30, 2012
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