參數(shù)資料
型號: MC68HC05JB4DWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 33/134頁
文件大小: 1305K
代理商: MC68HC05JB4DWR2
GENERAL RELEASE SPECIFICATION
February 24, 1999
MOTOROLA
MC68HC05JB4
A-2
REV 2
PAINTEN – PA0-PA3 External Interrupt Options
1 =
External interrupt capability on PA0-PA3 disabled.
0 =
External interrupt capability on PA0-PA3 enabled.
OSCDLY – Oscillator Delay Option
1 =
128 internal clock cycles.
0 =
4064 internal clock cycles.
LVREN – LVR Option
1 =
Low Voltage Reset circuit enabled.
0 =
Low Voltage Reset circuit disabled.
Figure A-1. MC68HC705JB4 Memory Map
A.4
BOOTSTRAP MODE
Bootloader mode is entered upon the rising edge of RESET if the IRQ/VPP pin is
at VTST and the PB0 pin is at logic zero. The Bootloader program is masked in the
ROM area from $1E00 to $1FEF. This program handles copying of user code from
an external EPROM into the on-chip EPROM. The bootload function has to be
done from an external EPROM. The bootloader performs one programming pass
at 1ms per byte then does a verify pass.
$1FF7
$1FF8
$1FF9
$1FFA
$1FFB
$1FFC
$1FFD
$1FFE
$1FFF
$003F
$0000
$1FF6
$1FF3
$1FF4
$1FF5
$1FF2
$1FF1
Reserved
USB Vector (Low Byte)
Timer1 Vector (Low Byte)
USB Vector (High Byte)
Timer1 Vector (High Byte)
MFT Vector (Low Byte)
MFT Vector (High Byte)
Reserved
$1FF0
Reserved
IRQ/IRQ2 Vector (High Byte)
IRQ/IRQ2 Vector (Low Byte)
SWI Vector (High Byte)
SWI Vector (Low Byte)
Reset Vector (High Byte)
Reset Vector (Low Byte)
I/O Registers
64 Bytes
I/O Registers
64 Bytes
$0000
$003F
$0040
$007F
Unused
63 Bytes
User RAM
176 Bytes
64 Byte Stack
$0080
$00C0
$00FF
$012F
$0130
$0FFF
Unused
3792 Bytes
$1000
$1DFF
$1E00
$1FEF
User EPROM
3584 Bytes
Bootstrap ROM
496 Bytes
User Vectors
16 Bytes
$1FF0
$1FFF
Mask Option Register
$007E
EPROM Program Control Register
$003E
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