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SPMCK16Z4MPV20 Datasheet(PDF) 402 Page - Freescale Semiconductor, Inc

Part # SPMCK16Z4MPV20
Description  M68HC16Z Series
PDF  500 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

SPMCK16Z4MPV20 Datasheet(HTML) 402 Page - Freescale Semiconductor, Inc

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REGISTER SUMMARY
M68HC16 Z SERIES
D-28
USER’S MANUAL
D.4.4 ROM Bootstrap Words
Typically, CPU16 reset vectors reside in non-volatile memory and are 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) MC68HC16Z2 and MC68HC16Z3 devices, ROMBS[0:3] are
masked to $0000. When the ROM on the MC68HC16Z2 and MC68HC16Z3 is masked
with customer specific code, ROMBS[0:3] respond to system addresses $00000 to
$00006 during the reset vector fetch if BOOT = 0.
ROMBS0 — ROM Bootstrap Word 0
$YFF830
15
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2
1
0
NOT USED
ZK[3:0]
SK[3:0]
PK[3:0]
ROMBS1 — ROM Bootstrap Word 1
$YFF832
15
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2
1
0
PC[15:0]
ROMBS2 — ROM Bootstrap Word 2
$YFF834
15
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3
2
1
0
SP[15:0]
ROMBS3 — ROM Bootstrap Word 3
$YFF836
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2
1
0
IZ[15:0]
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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