Specifications
Functional Description
30-Dec-2010 CM-X300 Reference Guide Rev 1.31 39
Table 38 Touch Panel Interface Signals
CM-X300 Signal
Name
Type
Description
TS-XP
AI
X+ (Right)
TS-YP
AI
Y+ (Top)
TS-XM
AI
X- (Left)
TS-YM
AI
Y- (Bottom)
3.3.15 Power
The CM-X300 connects to power sources through the dedicated pins on the CAMI
connectors listed in the Table 39 below.
Table 39 Power Signals
CM-X300 Signal
Name
Type
Description
GND
P
Ground (common wire)
VBAT
P
Battery/DC supply voltage
VCHRG
P
Charger voltage
VCC-RTC
P
RTC backup supply voltage
The main supply voltage for CM-X300 should be connected to VBAT pins on the CAMI.
When an external regulator is used for VBAT (CM-X300 without the ―B‖ option) VCHRG
pins can be left unconnected.
If a battery is used for VBAT (CM-X300 with the ―B‖ option) VCHRG pins should be
connected to an external DC Charger. Battery charge current is drawn from the VCHRG
input.
The operating conditions for the charger and the battery are listed below.
Table 40 Battery and Charger Operating Conditions
Parameter
Description
VBAT voltage
With “B” option: VBAT should be in 3.4V to 4.5V voltage range.
CM-X300 will not boot until VBAT is within this range.
If the battery is completely drained (below 3.2V), then pre-charge mode is started
when a charger has been detected. The current flow into the battery will be 40mA
nominal. If within 60 min. the VBAT reached 3.2V, CM-X300 will be powered on,
otherwise the pre-charge mode will be disabled.
If VBAT reaches 4.7V (for example, when battery suddenly disconnects while
charger is connected and powered), CM-X300 will be turned off immediately.
Without “B” option: VBAT should be 3.3V for normal operation.
When battery is not required by design, external regulator voltage should not fall
below 3.2V.
VCHRG voltage
4.6 to 10.0 V
Battery type
The internal battery charger supports the following battery chemistries:
Single-Cell Li-Ion at 4.1V
Single-Cell Li-Ion at 4.2V
Li-Polymer Pack
VCC-RTC voltage
1.5 to 5.0 V
Typical supply current 390 nA @ 3.0 V
3.3.16 System Signals
The CM-X300‘s system signals are listed in Table 41.