Canon DC20 E - Outline; Operation at Charging; Conditions to Start Charging

DC10 E, DC20 E
TECHNICAL DESCRIPTION
8
3-1 Outline
The main circuit elements and their functions are as follows.
(1) IC100 (SUB MI-COM)
• Control of IC3201
• Error discrimination and display
• Detection and display of charging progress
• Detection of DC JACK connection and voltage
• Detection of internal battery temperature
(2) IC3201 (DC/DC CONVERTER CONTROL)
• Charging voltage/current control
3-2 Operation at Charging
3-2-1 Conditions to Start Charging
When the following conditions are satisfied, the SUB MI-COM (IC100) controls the IC3201 and starts charging.
If the conditions shown in (4) and (5) above are not satisfied or if the type in (6) could not be confirmed, a charge error is indicated.
Conditions Detection Source of detection
1 Main unit power is turned OFF SUB MI-COM -
DC jack is connected. SUB MI-COM pin 12 DC JACK
DC J DET
Power supplied from DC jack SUB MI-COM pin 13 DC IN
DC V DET
UNREG voltage is 8.4 ±0.3 V. SUB MI-COM pin 26 UNREG.
BATT.A/D
Battery temperature is within the range of SUB MI-COM pin 27 Battery T terminal
-6.8°C to 49.3°C. BATT.TEMP
Confirmation of the type of the battery connected SUB MI-COM pin 31 Battery D terminal
BATT.INFO D
6
2
3
4
5