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MC81F4216 Datasheet, PDF (181/200 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS | |||
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Mark Name
SW5.1 â SELL4x16
SW5.2 â SELL4204
â
SW5.3 - MODE
SW5.4
SW4.1 â OSCS.0
SW4.2 â OSCS.1
SW4.3 â OSCS.2
â¡
SW4.4
SW4.5
SW4.6 â LVRS.0
SW4.7 â LVRS.1
SW4.8 â LVREN
SW3.1 â R34
SW3.2 â R33
SW3.3 â R34
â¢
SW3.4 â R35
SW3.5 â R00
SW3.6 â R01
October 19, 2009 Ver.1.35
MC81F4x16
Description
Those two switch are used to select the device mode
SW5.1 :On & SW5.2:On : 4432 mode
SW5.1 :Off & SW5.2:On : 4x16 mode
SW5.1 :On & SW5.2:Off : 4204 mode
It is used for developing emulator.
So, user must turn it off always.
Not Connected
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
Not Connected
Not Connected
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
Rom Option bit 7 : Low Voltage Reset Enable bit
On : (1) Disable ( RESETB )
Off : (0) Enable ( R35 )
On : Connect the XTAL to R34/XIN pin
Off : Disconnect
On : Connect the XTAL to R33/XOUT pin
Off : Disconnect
On : Connect the EXT.RC to R34/XIN pin
Off : Disconnect
On : Connect the Reset to R35/Reset pin
Off : Disconnect
On : Connect the Sub-Clock to R00/SXIN pin
Off : Disconnect
On : Connect the Sub-Clock to R01/SXOUT pin
Off : Disconnect
181
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