MC81F4x16
3.6 20 PDIP/SOP
EC1/SCK/EXT2/AN2/R04
1
2
3
4
5
6
7
8
9
20
19
18
17
R03/AN1/EXT1/T0O/PWM0O
PWM1O/T1O/SI/EXT3/AN3/R05
EC2/SO/EXT4/AN4/R06
(SDATA) T2O/EXT5/AN5/R07
VDD
Vref/EXT6/R10
(SCLK) PWM2O/EXT7/AN6/R11
RxD/R14
R02/AN0/EXT0/EC0
SXout/R01/EXT11
SXin/R00/EXT10
Vss
RESETB/R35/VPP
Xin/R34
Xout/R33
R27/AN12
R26/AN11
MC81F4216 16
15
14
13
12
11
TxD/R15
AN10/R25
10
Note:
* You must set R12 port as an low OUTPUT mode even it is not exist in 20pin package.
*
In fact, R12 port is exist in side of the package and it‟s reset status is input mode. If it is in
input mode it course current leakage when the MCU falls in stop/sleep mode. So you must
set it as an output mode before fall in stop/sleep.
It is recommendable to set R12 port as an low OUTPUT mode at initial time.
October 19, 2009 Ver.1.35
17
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