Model
MASS 2
Version
V_1.0
Prepared by
H/W
Date
22/01/2008
Subject Technical
Manual Page
21/59
Figure 12. SIM interface
Figure 13. SIM/TFLASH Connector Circuit of MASS 2
In MEGA2, The SIM Connector is soldered on FPCB with T-Flash Connector as above Figure 13.
Keypad Scanner
The keypad can be divided into two parts : One is the keypad interface including 7 columns and 6 rows The other is the key
detection block which provides key pressed, key released and de-bounce mechanism. Each time the key is pressed or released,
i.e. something different in the 7x6 matrix, the key detection block will sense it, and it will start to recognize if it is a key
pressed or key released event. Whenever the key status changes and is stable, a KEYPAD IRQ will be issued. The MCU can
then read the key pressed directly in KP_HI_KEY, KP_MID_KEY and KP_LOW_KEY register.
In MASS 2
, The 5 Rows are used (Row0 ~Row4) and The 5 Columns are used (Col 0~4)
Figure 14. Key pressed with de-bounce mechanism
Summary of Contents for MASS2
Page 20: ...Model MASS 2 Version V_1 0 Prepared by H W Date 22 01 2008 Subject Technical Manual Page 9 11 ...
Page 31: ...Model MASS 2 Version V_1 0 Prepared by H W Date 22 01 2008 Subject Technical Manual Page 9 59 ...
Page 88: ...Model MASS 2 Version V_1 0 Prepared by H W Date 22 01 2008 Subject Technical Manual Page 7 42 ...
Page 89: ...Model MASS 2 Version V_1 0 Prepared by H W Date 22 01 2008 Subject Technical Manual Page 8 42 ...
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