HCS08 datasheet(75/290 Pages) MOTOROLA

75 / 290 page

Data Sheet — MC9S08GB60/D V1.5

MOTOROLA

MC9S08GB/GT

5.8.5 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.

Figure 5-6 System Device Identification Register (SDIDH, SDIDL)

REV[3:0] — Revision Number

The high-order 4 bits of address $1806 are hard coded to reflect the current mask set revision number

(0–F).

ID[11:0] — Part Identification Number

Each derivative in the HCS08 Family has a unique identification number. The MC9S08GB/GT is hard

coded to the value $002.

5.8.6 System Real-Time Interrupt Status and Control Register (SRTISC)

This register contains one read-only status flag, one write-only acknowledge bit, three read/write delay

selects, and three unimplemented bits, which always read 0.

Figure 5-7 System RTI Status and Control Register (SRTISC)

Bit 7

4321

Bit 0

Read:

REV3

REV2

REV1

REV0

ID11

ID10

ID9

ID8

Reset:

0(1)

NOTES:

1. The revision number that is hard coded into these bits reflects the current silicon revision level.

0(1)

0000

Read:

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

Reset:

00010

= Unimplemented or Reserved

Bit 7

4321

Bit 0

Read:

RTIF

RTICLKS

RTIE

RTIS2

RTIS1

RTIS0

Write:

RTIACK

Reset:

00000

= Unimplemented or Reserved

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