參數(shù)資料
型號： MB91316PMC-G-XXXE1
元件分類： 微控制器/微處理器
英文描述： 32-BIT, MROM, 40.8 MHz, RISC MICROCONTROLLER, PQFP176
封裝： 24 X 24 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-176
文件頁數(shù)： 15/71頁
文件大小： 575K
代理商： MB91316PMC-G-XXXE1
MB91319R Series
22
(6) Watchdog timer
The watchdog timer that is built into this product monitors the program to see if it performs a reset delay
operation within a fixed period of time. And, that resets the CPU if the reset delay operation is not performed
due to a runaway program.
As an exception, the watchdog timer defers a reset automatically under the condition in which the CPU stops
program execution.
A watchdog reset may not be generated in the above situation caused by the system running out of control.
In that case, reset (INIT) by external INIT pin.
(7) Notes on using A/D
The MB91319R series has built-in A/D converter. Do not supply a voltage higher than VDDE to the AVCC.
Software reset in synchronous mode
When software reset in the synchronous mode is used, the following two conditions must be satisfied before
setting the SRST bit of the STCR (standby control register) to 0.
- Set the interrupt enable flag (I-Flag) to the interrupt disabled (I-Flag = 0).
- Do not use NMI.
(8) Simultaneous generation of software break and user interrupt/NMI (only for MB91FV319R)
If a software break and a user interrupt/NMI occur simultaneously, the emulator debugger may cause the
following phenomena.
The debugger stops pointing to a location other than the programmed breakpoints.
The halted program is not re-executed correctly.
If these phenomena occur, use a hardware break instead of the software break. If the monitor debugger
has been used, avoid setting any break at the relevant location.
(9) Step execution of RETI instruction
In an environment where interrupts frequently occur during single-step execution, only the relevant interrupt
processing routines are executed repeatedly during single-step execution of the RETI instruction. This will
prevent the main routine and low-interrupt-level programs from being executed. To avoid it, do not single-
step RETI instructions.
When the relevant interrupt routine no longer requires being debugged, disable the relevant interrupt and
perform debugging.
(10) About an operand break
Do not apply a data event break to access to the area containing the address of a stack pointer.
(11) Example of batch file for configuration
To debug a program downloaded to internal RAM, be sure to execute the following batch file after executing
RESET.
#-----------------------------------------------------------------------------------
#Set MODR (0x7fd)
= Enable In memory + 16-bit External Bus
set mem/byte 0x7fd
= 0x5
#----------------------------------------------------------------------------------
(12) Address in the built-in Flash/ROM area (Flash memory for program : 1 Mbyte product)
The address 0X0017FFF8 in the built-in Flash/ROM area has been reserved. You must configure the FE.
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