參數(shù)資料
型號： μPD75F4246(A)
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8 Bit Single Chip Microcontrollers
中文描述： 8位單片機(jī)微控制器
文件頁數(shù)： 46/143頁
文件大小： 549K
代理商： ΜPD75F4246(A)
34
CHAPTER 4 SAMPLE PROGRAMS
4.3 Description of Modules
The processing corresponding to each module is described in Table 4-3 below.
Table 4-3. Description of Modules (1/2)
Module Name
Name
Description
This is the flash writer’s main module. This module controls commands to be executed
from this module.
This module is used to make operating clock and erase time settings for the
μ
PD75F4264
as well as port settings for peripheral circuits.
This module switches the
μ
PD75F4264 to power on mode and write mode.
This module uses the reset command to check communication with the
μ
PD75F4264.
This module sets the
μ
PD75F4264’s operating clock to the
μ
PD75F4264.
This module sets the
μ
PD75F4264’s erase time to the
μ
PD75F4264.
This module erases the
μ
PD75F4264’s program area (flash memory).
This module writes data to the
μ
PD75F4264’s program area (flash memory). It is used
in combination with the status check command to check for write failures during the
write operation.
This module compares the contents of the
μ
PD75F4264’s program area (flash
memory) with the data received by the
μ
PD75F4264.
This module checks whether or not the
μ
PD75F4264’s program area (flash memory)
has been erased.
This module reads EEPROM data from the
μ
PD75F4264. It is used in combination
with the status check command to check for read failures during the read operation.
This module gets the
μ
PD75F4264’s device information (silicon signature).
This module gets the
μ
PD75F4264’s internal command execution status.
This module turns off the power to the
μ
PD75F4264.
This module loads data from the host machine to the flash writer’s external RAM (for
details, see
CHAPTER 5 HOST INTERFACE
).
This module sends the host machine an error message when an error has occurred
in the flash writer (for details, see
CHAPTER 5 HOST INTERFACE
).
This module uses an interrupt to receive data from the host machine (for details, see
CHAPTER 5 HOST INTERFACE
).
This module inserts a wait period in 1-ms units. It uses the RFTM flag (FE14H in RAM)
to enable other processing to be performed during the wait period.
This module inserts a wait period in 1-
μ
s units. It uses the RFTM flag (FE14H in RAM)
to enable other processing to be performed during the wait period.
This module inserts a wait period in 1-ms units. The wait period is maintained within
this module for the specified amount of time.
This module inserts a 15-
μ
s wait period.
This module calculates the wait period for the blank check operation.
This module calculates the wait period for the write operation.
MAIN
MINIT
MPWON
MSYNC
MFRQ
MERST
MERS
MPRG
MVRF
MBLN
MREAD
MSIG
MSTS
MPWOFF
MLOAD
MERMSG
IHRCV
STMMS
STMUS
STMWT
STM15
STMBLN
STMPRG
Main processing
Initialization
Switch to power on/
write mode
Synchronization
detection
Oscillation frequency
setting
Erase time setting
Erase
Write
Verify
Blank check
Read
Get device information
Get status
Power off processing
Load write data
Send error message
Receive interrupt
servicing
Timer (ms)
Timer (
μ
s)
Timer (endless loop)
Timer (15
μ
s)
Wait calculation
(blank check)
Wait calculation
(write)
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