参数资料
型号: MC68HC08QY4CDWE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封装: 1.27 MM PITCH, LEAD FREE, PLASTIC, MS-013AA, SOIC-16
文件页数: 50/178页
文件大小: 2311K
代理商: MC68HC08QY4CDWE
Monitor Module (MON)
MC68HC08QY/QT Family Data Sheet, Rev. 1
Freescale Semiconductor
143
The monitor ROM firmware echoes each received byte back to the PTA0 pin for error checking. An 11-bit
delay at the end of each command allows the host to send a break character to cancel the command. A
delay of two bit times occurs before each echo and before READ, IREAD, or READSP data is returned.
The data returned by a read command appears after the echo of the last byte of the command.
NOTE
Wait one bit time after each echo before sending the next byte.
Figure 15-13. Read Transaction
Figure 15-14. Write Transaction
A brief description of each monitor mode command is given in Table 15-3 through Table 15-8.
Table 15-3. READ (Read Memory) Command
Description
Read byte from memory
Operand
2-byte address in high-byte:low-byte order
Data Returned
Returns contents of specified address
Opcode
$4A
Command Sequence
READ
ECHO
FROM
HOST
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
ADDRESS
LOW
DATA
RETURN
13, 2
11
4
Notes:
2 = Data return delay, approximately 2 bit times
3 = Cancel command delay, 11 bit times
4 = Wait 1 bit time before sending next byte.
44
1 = Echo delay, approximately 2 bit times
WRITE
ECHO
FROM
HOST
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
ADDRESS
LOW
DATA
Notes:
2 = Cancel command delay, 11 bit times
3 = Wait 1 bit time before sending next byte.
11
3
11
3
32, 3
1 = Echo delay, approximately 2 bit times
READ
ECHO
SENT TO MONITOR
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
DATA
RETURN
ADDRESS
LOW
相关PDF资料
PDF描述
MC13213 SPECIALTY MICROPROCESSOR CIRCUIT, PBGA71
MSP430F4491IPZR 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP100
MAC7136MVM50 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PBGA208
MAC7141CFU50 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP100
MC9S12XEG128MAA 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP80
相关代理商/技术参数
参数描述
MC68HC08SR12 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08TV24CFB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08XL36 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC08XL36CB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC08XL36CFU 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit