MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 83
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MC68HC912B32VFU8
Manufacturer Part Number
MC68HC912B32VFU8
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC912B32VFU8.pdf
(334 pages)
Specifications of MC68HC912B32VFU8
Cpu Family
HC12
Device Core Size
16b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
32KB
Total Internal Ram Size
1KB
# I/os (max)
63
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC912B32VFU8
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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MAPROM — FLASH EEPROM/ROM Map Bit
ROMON — FLASH EEPROM/ROM Enable Bit
5.5 Memory Map
Figure 5-6
Freescale Semiconductor
This bit determines the location of the on-chip FLASH EEPROM/ROM. In expanded modes, it is reset
to 0. In single-chip modes, it is reset to 1. If ROMON is 0, this bit has no meaning or effect.
In expanded modes, ROMON is reset to 0. In single-chip modes, it is reset to 1. If the internal RAM,
registers, EEPROM, or BDM ROM (if active) are mapped to the same space as the FLASH
EEPROM/ROM, they will have priority over the FLASH EEPROM/ROM.
1 = FLASH EEPROM/ROM is located from $8000 to $FFFF.
0 = FLASH EEPROM/ROM is located from $0000 to $7FFF.
1 = Enables the FLASH EEPROM/ROM in the memory map
0 = Disables the FLASH EEPROM/ROM in the memory map
illustrates the memory map for each mode of operation immediately after reset.
$FFC0
$FFFF
$0D00
$F000
$FF00
$0000
$8000
$0800
EXPANDED
VECTORS
SINGLE-CHIP
NORMAL
VECTORS
M68HC12B Family Data Sheet, Rev. 9.1
Figure 5-6. Memory Map
SINGLE-CHIP
VECTORS
SPECIAL
$FF00
$FFFF
$0000
$01FF
$03FF
$0BFF
$0D00
$0FFF
$0200
$0800
REGISTERS
512 BYTES
MAP TO ANY 2-K SPACE
1-KBYTE RAM
MAP TO ANY 2-K SPACE
768 BYTES EEPROM
MAP TO ANY 4-K SPACE
REGISTER FOLLOWING
SPACE
512 BYTES
IF ACTIVE
MAP WITH MAPROM BIT
BDM
FLASH EEPROM/ROM
IN MISC REGISTER
OR $8000–$FFFF
TO $0000–$7FFF
$0000
$8000
$FFFF
$7FFF
Memory Map
83
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