MC81F4204
April 24, 2012 Ver.1.41 135
Mark Name Description
SW5.1 – SELL4416
SW5.2 – SELL4204
Those two switch are used to select the device mode
SW5.1 :On & SW5.2:On : 4432 mode
SW5.1 :Off & SW5.2:On : 4416 mode
SW5.1 :On & SW5.2:Off : 4204 mode
SW5.3 - MODE It is used for developing emulator.
So, user must turn it off always.
①
SW5.4 Not Connected
SW4.1 – OSCS.0
SW4.2 – OSCS.1
SW4.3 – OSCS.2
Rom Option bit 0~2 : OSC Selection bits
( On : 1, Off : 0 )
000: External RC
001: Internal RC; 4MHz
010: Internal RC; 2MHz
011: Internal RC; 1MHz
100: Internal RC; 8MHz
101: Not available
110: Not available
111: Crystal/ceramic oscillator
SW4.4 Not Connected
SW4.5 Not Connected
SW4.6 – LVRS.0
SW4.7 – LVRS.1
Rom Option bit 5~6 : Low Voltage Reset Level Selection bit
( On: 1, Off : 0 )
00: 2.4V 10: 3.0V
01: 2.7V 11: 4.0V
②
SW4.8 – LVREN Rom Option bit 7 : Low Voltage Reset Enable bit
On : (1) Disable ( RESETB )
Off : (0) Enable ( R35 )
SW3.1 – R34 On : Connect the XTAL to R34/XIN pin
Off : Disconnect
SW3.2 – R33 On : Connect the XTAL to R33/XOUT pin
Off : Disconnect
SW3.3 – R34 On : Connect the EXT.RC to R34/XIN pin
Off : Disconnect
SW3.4 – R35 On : Connect the Reset to R35/Reset pin
Off : Disconnect
SW3.5 – R00 On : Connect the Sub-Clock to R00/SXIN pin
Off : Disconnect
③
SW3.6 – R01 On : Connect the Sub-Clock to R01/SXOUT pin
Off : Disconnect
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