Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 4 PORT FUNCTIONS
R01UH0042EJ0500 Rev.5.00 Page 107 of 1513
Aug 12, 2011
(7) Port setting
Set a port as illustrated below.
Figure 4-3. Setting of Each Register and Pin Function
PFCEnm
0
1
0
1
PFCnm
PMCn register
Output mode
Input mode
PMn register
“0”
“1”
“0”
“1”
“0”
“1”
(a)
(b)
(c)
(d)
Alternate function
(when two alternate
functions are available)
Port mode
Alternate function 1
Alternate function 2
PFCn register
Alternate function
(when three or more alternate
functions are available)
Alternate function 1
Alternate function 2
Alternate function 3
Alternate function 4
PFCn register
PFCEn register
0
0
1
1
(a)
(b)
(c)
(d)
Remark Set the alternate functions in the following sequence.
<1> Set the PFCn and PFCEn registers.
<2> Set the PMCn register.
<3> Set the INTRn or INTFn register (to specify an external interrupt pin).
If the PMCn register is set first, an unintended function may be set while the PFCn and PFCEn
registers are being set.