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S9S08SG16E1VTJR Datasheet(PDF) 70 Page - Freescale Semiconductor, Inc |
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S9S08SG16E1VTJR Datasheet(HTML) 70 Page - Freescale Semiconductor, Inc |
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70 / 328 page  Chapter 5 Resets, Interrupts, and General System Control MC9S08SG32 Data Sheet, Rev. 7 70 Freescale Semiconductor 5.7.5 System Device Identification Register (SDIDH, SDIDL) 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. Figure 5-6. System Device Identification Register — High (SDIDH) 76543210 R1 ID11 ID10 ID9 ID8 W Reset: 11 1 - Bit 7 is a mask option tie off that is used internally to determine that the device is a MC9S08SG32 Series. — — — 0000 = Unimplemented or Reserved Table 5-7. SDIDH Register Field Descriptions Field Description 7 Bit 7 will read as a 1 for the MC9S08SG32 Series devices; writes have no effect. 6:4 Reserved Bits 6:4 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 MC9S08SG32 is hard coded to the value 0x01A. See also ID bits in Table 5-8. 76543210 R ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0 W Reset: 00011010 = Unimplemented or Reserved Figure 5-7. System Device Identification Register — Low (SDIDL) Table 5-8. 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 MC9S08SG32 is hard coded to the value 0x01A. See also ID bits in Table 5-7. |
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