IA186EM/IA188EM
Data Sheet
8-Bit/16-Bit Microcontrollers
February 25, 2011
Bit [1]—RSIE Receive Status Interrupt Enable → When an exception occurs during data
reception, an interrupt request is generated if enabled by this bit (RSIE = 1). Interrupt
requests are made for the error conditions listed in the serial port status register (BRK,
OER, PER, and FER). This bit is 0 at reset.
Bit [0]—RMODE Receive Mode → When this bit is 1, the receive section of the serial
port is enabled. When 0, it is disabled. This bit is 0 at reset.
5.1.24 PDATA1 (07ah) and PDATA0 (074h)
PIO DATA Registers. When a PIO pin is configured as an output, the value in the
corresponding PIO data register bit is driven onto the pin. However, if the PIO pin is configured
as an input, the value on the pin is put into the corresponding bit of the PIO data register.
Table 41 lists the default states for the PIO pins.
Table 41. PIO Pin Assignments
PIO Number Associated Pin Name Power-On Reset Status
0
1
2
3
4
5
6
tmrin1
tmrout1
pcs6/a2
pcs5/a1
dt/r_n
Input with pull-up
Input with pull-down
Input with pull-up
Input with pull-up
a
Normal operation
a
den_n/ds_n
srdy
Normal operation
b
Normal operation
c
a
a17
7
8
9
Normal operation
c
c
a
a18
Normal operation
a
a19
Normal operation
10
11
12
13
14
15
16
17
18
19
20
21
22
23
tmrout0
tmrin0
drq0
Input with pull-down
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-down
Input with pull-down
drq1
mcs0_n
mcs1_n
pcs0_n
pcs1_n
pcs2_n
pcs3_n
sclk
sdata
sden0
sden1
®
IA211050831-19
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