mc9s08sg4 Freescale Semiconductor, Inc, mc9s08sg4 Datasheet - Page 70

• Manufacturer Part Number: mc9s08sg4
• Description: 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

1
Chapter 5 Resets, Interrupts, and General System Control
5.7.5
These high page read-only registers are 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.
70
- Bit 7 is a mask option tie off that is used internally to determine that the device is a MC9S08SG8.
Reserved
Reset:
Reset:
ID[11:8]
ID[7:0]
Field
Field
6:4
3:0
7:0
7
W
W
R
R
System Device Identification Register (SDIDH, SDIDL)
Bit 7 will read as a 1 for the MC9S08SG8 devices; writes have no effect.
Bits 6:4 are reserved. Reading these bits will result in an indeterminate value; writes have no effect.
Part Identification Number — Each derivative in the HCS08 Family has a unique identification number. The
MC9S08SG8 is hard coded to the value 0x014. See also ID bits in
ID7
Part Identification Number — Each derivative in the HCS08 Family has a unique identification number. The
MC9S08SG8 is hard coded to the value 0x014. See also ID bits in
1
1
0
7
7
1
Figure 5-6. System Device Identification Register — High (SDIDH)
= Unimplemented or Reserved
= Unimplemented or Reserved
Figure 5-7. System Device Identification Register — Low (SDIDL)
ID6
—
0
6
6
Table 5-7. SDIDH Register Field Descriptions
Table 5-8. SDIDL Register Field Descriptions
MC9S08SG8 MCU Series Data Sheet, Rev. 3
ID5
—
0
5
5
ID4
—
1
4
4
Description
Description
ID11
ID3
3
0
3
0
Table
Table
5-8.
5-7.
ID10
ID2
0
1
2
2
Freescale Semiconductor
ID9
ID1
0
0
1
1
ID8
ID0
0
0
0
0