Datasheet

Chapter 5 Resets, Interrupts, and System Configuration
MC9S08JM16 Series Data Sheet, Rev. 2
Freescale Semiconductor 73
5.7.6 System Device Identification Register (SDIDH, SDIDL)
This read-only register is included, so host development systems can identify the HCS08 derivative and
revision number. This allows the development software to recognize where specific memory blocks,
registers, and control bits are located in a target MCU.
1
SPI2FE
SPI2 Ports Input Filter Enable
0 Disable input filter on SPI2 port pins to allow for higher maximum SPI baud rate.
1 Enable input filter on SPI2 port pins to eliminate noise and restrict maximum SPI baud rate
0
ACIC
Analog Comparator to Input Capture Enable— This bit connects the output of ACMP to TPM input channel 0.
0 ACMP output not connected to TPM input channel 0.
1 ACMP output connected to TPM input channel 0.
76543210
R ID11 ID10 ID9 ID8
W
Reset
————
0000
= Unimplemented or Reserved
Figure 5-7. System Device Identification Register — High (SDIDH)
Table 5-8. SDIDH Register Field Descriptions
Field Description
7:4
Reserved
Bits 7:4 are reserved. Reading these bits will result in an indeterminate value; writes have no effect.
3:0
ID[11:8]
Part Identification Number — Each derivative in the HCS08 family has a unique identification number. The
MC9S08JM16 series is hard coded to the value 0x01E. See also ID bits in Tabl e 5 -9 .
76543210
R ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0
W
Reset00011110
= Unimplemented or Reserved
Figure 5-8. System Device Identification Register — Low (SDIDL)
Table 5-9. SDIDL Register Field Descriptions
Field Description
7:0
ID[7:0]
Part Identification Number — Each derivative in the HCS08 Family has a unique identification number. The
MC9S08JM16 series is hard coded to the value 0x01E. See also ID bits in Tabl e 5 -8 .
Table 5-7. SOPT2 Register Field Descriptions (continued)
Field Description