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參數資料
型號： MC68C912B32CFU8
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 16-Bit Microcontroller
中文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁數： 119/128頁
文件大小： 748K
代理商： MC68C912B32CFU8
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
119
The CPU must be in background mode to execute commands that are implemented in the BDM ROM.
The BDM ROM is located at $FF20 to $FFFF while BDM is active. There are also seven bytes of BDM
registers which are located at $FF00 to $FF06 while BDM is active. The CPU executes code from this
ROM to perform the requested operation. These commands are shown in
Table 44
.
NOTES:
1. STATUS command is a specific case of the READ_BD_BYTE command.
2. ENABLE_FIRMWARE and ENTER_TAG_MODE are specific cases of the WRITE_BD_BYTE command.
Table 43 BDM Commands Implemented in Hardware
Command
BACKGROUND
Opcode (Hex)
90
Data
None
Description
Enter background mode (if firmware enabled).
Read from memory with BDM in map (may steal cycles if
external access) data for odd address on low byte, data for
even address on high byte.
READ_BD_BYTE $FF01. Running user code (BGND in-
struction is not allowed).
READ_BD_BYTE
E4
16-bit address
16-bit data out
STATUS
1
E4
FF01,
0000 0000 (out)
FF01,
1000 0000 (out)
FF01,
1100 0000 (out)
16-bit address
16-bit data out
READ_BD_BYTE $FF01. BGND instruction is allowed.
READ_BD_BYTE $FF01. Background mode active (wait-
ing for single wire serial command).
Read from memory with BDM in map (may steal cycles if
external access) must be aligned access.
Read from memory with BDM out of map (may steal cycles
if external access) data for odd address on low byte, data
for even address on high byte.
Read from memory with BDM out of map (may steal cycles
if external access) must be aligned access.
Write to memory with BDM in map (may steal cycles if ex-
ternal access) data for odd address on low byte, data for
even address on high byte.
Write byte $FF01, set the ENBDM bit. This allows execu-
tion of commands which are implemented in firmware.
Typically, read STATUS, OR in the MSB, write the result
back to STATUS.
Write to memory with BDM in map (may steal cycles if ex-
ternal access) must be aligned access.
Write to memory with BDM out of map (may steal cycles if
external access) data for odd address on low byte, data for
even address on high byte.
Write to memory with BDM out of map (may steal cycles if
external access) must be aligned access.
READ_BD_WORD
EC
READ_BYTE
E0
16-bit address
16-bit data out
READ_WORD
E8
16-bit address
16-bit data out
WRITE_BD_BYTE
C4
16-bit address
16-bit data in
ENABLE_ FIRMWARE
2
C4
FF01,
1xxx xxxx(in)
WRITE_BD_WORD
CC
16-bit address
16-bit data in
WRITE_BYTE
C0
16-bit address
16-bit data in
WRITE_WORD
C8
16-bit address
16-bit data in
相關PDF資料
PDF描述
MC68CK338 Highly Integrated, Low-Power, 32-Bit Microcontroller
MC68EC060 32-Bit Microprocessors.(32位微處理器)
MC68EN360RC25V QUad Integrated Communications Controller Users Manual
MC68EN360CFE25 QUad Integrated Communications Controller Users Manual
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相關代理商/技術參數
參數描述
MC68C912B32FU8 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-Bit Microcontroller
MC68CK16Z1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
MC68CK16Z1CAG16 功能描述:16位微控制器 - MCU 16BIT 1KRAM 32KHZ CRYSTAL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
MC68CK16Z1CAG16 制造商:Freescale Semiconductor 功能描述:Microcontroller
MC68CK16Z1CFC16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
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