NXP Semiconductors MC9S08LG16, Reference Manual

Page: 86 / 373

Chapter 5 Resets, Interrupts, and General System Control
MC9S08LG32 MCU Series, Rev. 5
86 Freescale Semiconductor
5.8.6 System Device Identification Register (SDIDH, SDIDL)
These high-page read-only registers are included so host development systems can identify the HCS08
derivative. This allows the development software to recognize where specific memory blocks, registers,
and control bits are located in a target MCU.
7 6 5 4 3 2 1 0
R ID11 ID10 ID9 ID8
W
Reset: — — — — 0 0 0 0
= 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 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
MC9S08LG32 is hard coded to the value 0x02A. See also ID bits in Table 5-9 .
7 6 5 4 3 2 1 0
R ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0
W
Reset: 0 0 1 0 1 0 1 0
= 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
MC9S08LG32 is hard coded to the value 0x02A. See also ID bits in Table 5-8 .