ia186em Innovasic Semiconductor Inc., ia186em Datasheet - Page 79

• Manufacturer Part Number: ia186em
• Description: 8-bit/16-bit Microcontrollers
• Manufacturer: Innovasic Semiconductor Inc.

IA186EM/IA188EM
8-Bit/16-Bit Microcontrollers
5.1.25 PDIR1 (078h) and PDIR0 (072h)
PIO DIRection Registers. Each PIO pin is configured as an input or an output by the
corresponding bit in the PIO Direction register (see Table 44).
Table 44. PIO Mode and PIO Direction Settings
The value of the PDIR0 register is FC0Fh at reset (see Table 45).
Table 45. PDIR0
The value of the PDIR1 register is FFFFh at reset (see Table 46).
Table 46. PDIR1
5.1.26 PIOMODE1 (076h) and PIOMODE0 (070h)
PIO MODE Registers. Each PIO pin is configured as an input or an output by the corresponding
bit in the PIO direction register. The bit number of PMODE corresponds to the PIO number (see
Table 44, PIO Mode and PIO Direction
0000h at reset (see Table 47).
Table 47. PIOMODE0
PIO Mode
15
15
15
0
0
1
1
14
14
14
Bits [15–0]—PDIR15–PDIR0 PIO Direction 0 Bits → For each bit, if the value is 1, the
pin is configured as an input. If 0, as an output. The values of these bits correspond to
those in the PIO data registers and PIO mode registers.
Bits [15–0]—PDIR31–PDIR16 PIO Direction 1 Bits → For each bit, if the value is 1, the
pin is configured as an input. If 0, as an output. The values of these bits correspond to
those in the PIO Data registers and PIO Mode registers.
13
13
13
PIO Direction
12
12
12
0
1
0
1
11
11
11
®
PMODE15–PMODE0
PDIR31–PDIR16
PDIR15–PDIR0
10
10
10
Normal operation
PIO input with pullup/pulldown
PIO output
PIO input without pullup/pulldown
9
9
9
8
8
8
7
7
7
Pin function
UNCONTROLLED WHEN PRINTED OR COPIED
Settings). The value of the PIOMODE0 register is
6
6
6
5
5
5
Page 79 of 145
IA211050831-16
4
4
4
3
3
3
2
2
2
1
1
1
0
0
0
December 24, 2008
http://www.Innovasic.com
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