收藏本站
参数资料
型号： PSD813F4-15JI
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52
封装： PLASTIC, LCC-52
文件页数： 21/103页
文件大小： 1180K
代理商： PSD813F4-15JI
PSD8XXF2/3/4/5
24/103
Erasing Flash Memory
Flash Bulk Erase. The Flash Bulk Erase instruc-
tion uses six WRITE operations followed by a
READ operation of the status register, as de-
scribed in Table 8. If any byte of the Bulk Erase in-
struction is wrong, the Bulk Erase instruction
aborts and the device is reset to the Read Flash
memory status.
During a Bulk Erase, the memory status may be
checked by reading the Error Flag (DQ5) bit, the
Toggle Flag (DQ6) bit, and the Data Polling Flag
(DQ7) bit, as detailed in the section entitled “Pro-
gramming Flash Memory”, on page 22. The Error
Flag (DQ5) bit returns a 1 if there has been an
Erase Failure (maximum number of Erase cycles
have been executed).
It is not necessary to program the memory with
00h because the PSD8XXFX automatically does
this before erasing to 0FFh.
During execution of the Bulk Erase instruction, the
Flash memory does not accept any instructions.
Flash Sector Erase. The Sector Erase instruc-
tion uses six WRITE operations, as described in
Table 8. Additional Flash Sector Erase codes and
Flash memory sector addresses can be written
subsequently to erase other Flash memory sec-
tors in parallel, without further coded cycles, if the
additional bytes are transmitted in a shorter time
than the time-out period of about 100s. The input
of a new Sector Erase code restarts the time-out
period.
The status of the internal timer can be monitored
through the level of the Erase Time-out Flag (DQ3)
bit. If the Erase Time-out Flag (DQ3) bit is 0, the
Sector Erase instruction has been received and
the time-out period is counting. If the Erase Time-
out Flag (DQ3) bit is 1, the time-out period has ex-
pired and the PSD8XXFX is busy erasing the
Flash memory sector(s). Before and during Erase
time-out, any instruction other than Suspend Sec-
tor Erase and Resume Sector Erase instructions
abort the cycle that is currently in progress, and re-
set the device to READ Mode. It is not necessary
to program the Flash memory sector with 00h as
the PSD8XXFX does this automatically before
erasing (byte = FFh).
During a Sector Erase, the memory status may be
checked by reading the Error Flag (DQ5) bit, the
Toggle Flag (DQ6) bit, and the Data Polling Flag
(DQ7) bit, as detailed in the section entitled “Pro-
gramming Flash Memory”, on page 22.
During execution of the Erase cycle, the Flash
memory accepts only Reset and Suspend Sector
Erase instructions. Erasure of one Flash memory
sector may be suspended, in order to read data
from another Flash memory sector, and then re-
sumed.
Suspend Sector Erase. When a Sector Erase
cycle is in progress, the Suspend Sector Erase in-
struction can be used to suspend the cycle by writ-
ing 0B0h to any address when an appropriate
Sector Select (FS0-FS7 or CSBOOT0-CSBOOT3)
is High. (See Table 8). This allows reading of data
from another Flash memory sector after the Erase
cycle has been suspended. Suspend Sector
Erase is accepted only during an Erase cycle and
defaults to READ Mode. A Suspend Sector Erase
instruction executed during an Erase time-out pe-
riod, in addition to suspending the Erase cycle, ter-
minates the time out period.
The Toggle Flag (DQ6) bit stops toggling when the
PSD8XXFX internal logic is suspended. The sta-
tus of this bit must be monitored at an address
within the Flash memory sector being erased. The
Toggle Flag (DQ6) bit stops toggling between
0.1 s and 15 s after the Suspend Sector Erase
instruction has been executed. The PSD8XXFX is
then automatically set to READ Mode.
If an Suspend Sector Erase instruction was exe-
cuted, the following rules apply:
– Attempting to read from a Flash memory sector
that was being erased outputs invalid data.
– Reading from a Flash sector that was
not being
erased is valid.
– The Flash memory
cannot be programmed, and
only responds to Resume Sector Erase and
Reset Flash instructions (READ is an operation
and is allowed).
– If a Reset Flash instruction is received, data in
the Flash memory sector that was being erased
is invalid.
Resume Sector Erase. If
a
Suspend
Sector
Erase instruction was previously executed, the
erase cycle may be resumed with this instruction.
The Resume Sector Erase instruction consists of
writing 030h to any address while an appropriate
Sector Select (FS0-FS7 or CSBOOT0-CSBOOT3)
is High. (See Table 8.)
相关PDF资料
PDF描述
PSD813F4-15J 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52
PSD813F4-70M 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52
PIC16C57C-04E/SS 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO28
PIC16LC55A-04/SP 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDIP28
PIC16LC57CT-04/SS 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO28
相关代理商/技术参数
参数描述
PSD813F4A-90J 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2A-90J RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4A-90M 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2A-90M RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4VA-15J 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2VA-15J RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4VA-15U 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2VA-15U RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F5-12JI 制造商:WSI 功能描述:
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*