mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 408

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

D.4.4 ROM Bootstrap Words
ROMBS0 — ROM Bootstrap Word 0
ROMBS1 — ROM Bootstrap Word 1
ROMBS2 — ROM Bootstrap Word 2
ROMBS3 — ROM Bootstrap Word 3
D-30
MOTOROLA
15
15
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15
Typically,CPU16 reset vectors reside in non-volatile memory and are only fetched
when the CPU16 comes out of reset. These four words can be used as reset vectors
with the contents specified at mask time. The content of these words cannot be
changed. On generic (blank ROM) MC68HC16Y3/916Y3 devices, ROMBS[0:3] are
masked to $0000. When the ROM on the MC68HC16Y3/916Y3 is masked with
customer specific code, ROMBS[0:3] respond to system addresses $00000 to $00006
during the reset vector fetch if BOOT = 0.
14
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14
NOT USED
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13
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12
Freescale Semiconductor, Inc.
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For More Information On This Product,
10
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10
ZK[3:0]
Go to: www.freescale.com
REGISTER SUMMARY
9
9
9
9
8
8
8
8
PC[15:0]
SP[15:0]
IZ[15:0]
7
7
7
7
6
6
6
6
SK[3:0]
5
5
5
5
4
4
4
4
3
3
3
3
MC68HC16Y3/916Y3
USER’S MANUAL
2
2
2
2
PK[3:0]
$YFF830
$YFF832
$YFF834
$YFF836
1
1
1
1
0
0
0
0