DEMO9S08EL32 Freescale Semiconductor, DEMO9S08EL32 Datasheet - Page 73

• Manufacturer Part Number: DEMO9S08EL32
• Description: BOARD DEMO FOR 9S08 EL MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08EL32

• Contents: Evaluation Board
• Processor To Be Evaluated: MC9S08EL32
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 12 V
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08EL
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08EL32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.7.3
This high page register is a write-once register so only the first write after reset is honored. It can be read
at any time. Any subsequent attempt to write to SOPT1 (intentionally or unintentionally) is ignored to
avoid accidental changes to these sensitive settings. SOPT1 should be written during the user’s reset
initialization program to set the desired controls even if the desired settings are the same as the reset
settings.
Freescale Semiconductor
COPT[1:0]
Reset:
STOPE
SCIPS
IICPS
Field
7:6
3:2
5
4
W
R
System Options Register 1 (SOPT1)
COP Watchdog Timeout — These write-once bits select the timeout period of the COP. COPT along with
COPCLKS in SOPT2 defines the COP timeout period. See
Stop Mode Enable — This write-once bit is used to enable stop mode. If stop mode is disabled and a user
program attempts to execute a STOP instruction, an illegal opcode reset is forced.
0 Stop mode disabled.
1 Stop mode enabled.
SCI Pin Select— This write-once bit selects the location of the RxD and TxD pins of the SCI module.
0 RxD on PTB0, TxD on PTB1.
1 RxD on PTA2, TxD on PTA3.
IIC Pin Select— These write-once bits select the location of the SCL and SDA pins of the IIC module.
00
01
1x
1
7
SDA on PTA2, SCL on PTA3.
SDA on PTB6, SCL on PTB7.
SDA on PTB2, SCL on PTB3.
COPT
= Unimplemented or Reserved
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
1
6
Figure 5-4. System Options Register 1 (SOPT1)
Table 5-5. SOPT1 Register Field Descriptions
STOPE
0
5
SCIPS
0
4
Description
Chapter 5 Resets, Interrupts, and General System Control
Table
3
0
IICPS
5-1.
0
2
0
0
1
0
0
0
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