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MC9S08SH4 Datasheet(PDF) 75 Page - Freescale Semiconductor, Inc |
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MC9S08SH4 Datasheet(HTML) 75 Page - Freescale Semiconductor, Inc |
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75 / 341 page  Chapter 5 Resets, Interrupts, and General System Control MC9S08SH8 MCU Series Data Sheet, Rev. 3 Freescale Semiconductor 71 5.7.6 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 5-7. System Device Identification Register — High (SDIDH 76543210 R0 ID11 ID10 ID9 ID8 W Reset: 01 1 - Bit 7 is a mask option tie off that is used internally to determine that the device is a MC9S08SH8. — — — 0000 = Unimplemented or Reserved Table 5-8. SDIDH Register Field Descriptions Field Description 7 Bit 7 will read as a 0 for the MC9S08SH8 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 Numbe — Each derivative in the HCS08 Family has a unique identification number. The MC9S08SH8 is hard coded to the value 0x014. See also ID bits in Table 5-9. 76543210 R ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0 W Reset: 00010100 = Unimplemented or Reserved Figure 5-8. System Device Identification Register — L w (SDIDL) Table 5-9. SDIDL Register Field Descriptions Field Description 7:0 ID[7:0] Part Identification Numbe — Each derivative in the HCS08 Family has a unique identification number. The MC9S08SH8 is hard coded to the value 0x014. See also ID bits in Table 5-8. |
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