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ST40RA Datasheet(PDF) 29 Page - STMicroelectronics

Part # ST40RA
Description  32-bit Embedded SuperH Device
PDF  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST40RA Datasheet(HTML) 29 Page - STMicroelectronics

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5 System configuration
ST40RA
29/94
STMicroelectronics
ADCS 7260755H
5.9.6
PIO alternate functions
The function of pads with PIO alternate functions are controlled by the PIO.PC0, PIO.PC1 and
PIO.PC2 registers.
In the ST40RA device, the operational modes for these registers differ from the standard
architecture definition and are shown in
Table 12.
[44:46]
EMPI_CS_ENB
Enable EMPI chip selection alternate function
000: NOTESC0 remapped to NOTEMPICS
001: NOTESC1 remapped to NOTEMPICS
010: NOTESC2 remapped to NOTEMPICS
011: NOTESC3 remapped to NOTEMPICS
100: NOTESC4 remapped to NOTEMPICS
101: NOTESC5 remapped to NOTEMPICS
110: Reserved
111: Disabled (value at reset)
RW
47
SEL_EXT_EMI_SLAVE
Select EMI slave or master functionality
0: EMI is bus master
1: EMI is bus slave
RW
[48:59]
Reserved
[60:63]
PIO_CONF
PIO_CONF
RW
PIO bit configuration
PIO output state
PIO.PC2
PIO.PC1
PIO.PC0
NonPIO functiona
a. State following reset
-0
0
0
PIO bidirectional
Open drain
0
0
1
PIO output
Push-pull
0
1
0
PIO bidirectional
Open drain
0
1
1
PIO input
High impedance
1
0
0
PIO input
High impedance
1
0
1
Reserved
-
1
1
0
Reserved
-
1
1
1
Table 12: PIO alternate function registers
SYSCONF.SYS_CON2
Functional pin use and behavior
0x0018



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