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参数资料
| 型号： | M8803F2W-15T1T |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| 封装： | PLASTIC, QFP-52 |
| 文件页数： | 13/85页 |
| 文件大小： | 601K |
| 代理商： | M8803F2W-15T1T |
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M88 FAMILY
20/85
Error bit (DQ5) 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 array with 00h
because
the
M88x3Fxx
FLASH+PSD
will
automatically do this before erasing to 0FFh.
During execution of the Bulk Erase instruction, the
Flash memory will not accept any instructions.
Flash Sector Erase Instruction
The Sector Erase instruction uses six write
operations, as described in Table 11. Additional
Flash Sector Erase confirm commands and Flash
sector addresses can be written subsequently to
erase other Flash sectors in parallel, without
further coded cycles, if the additional instruction is
transmitted in a shorter time than the time-out
period of about 100
s. The input of a new Sector
Erase instruction will restart the time-out period.
The status of the internal timer can be monitored
through the level of DQ3 (Erase time-out bit). If
DQ3 is ‘0’, the Sector Erase instruction has been
received and the time-out is counting. If DQ3 is ‘1’,
the time-out has expired and the M88x3Fxx
FLASH+PSD is busy erasing the Flash sector(s).
Before and during Erase time-out, any instruction
other than Erase suspend and Erase Resume will
abort the instruction and reset the device to Read
Array mode. It is not necessary to program the
Flash sector with 00h as the M8813F1x will do this
automatically before erasing (byte=FFh).
During a Sector Erase, the memory status may be
checked by reading status bits DQ5, DQ6, and
DQ7,
as
detailed
in
the
section
entitled
“Programming Flash Memory”, on page 18.
During execution of the erase instruction, the
Flash block logic accepts only Reset and Erase
Suspend instructions. Erasure of one Flash sector
may be suspended, in order to read data from
another Flash sector, and then resumed.
Flash Erase Suspend Instruction
When a Flash Sector Erase operation is in
progress, the Erase Suspend instruction will
suspend the operation by writing 0B0h to any
address when an appropriate Chip Select (FSi or
CSBOOTi) is true. (See Table 11). This allows
reading of data from another Flash sector after the
Erase operation has been suspended. Erase
suspend is accepted only during the Flash Sector
Erase instruction execution and defaults to read
array
mode. An
Erase
Suspend
instruction
executed during an Erase time-out will, in addition
to suspending the erase, terminate the time out.
The Toggle Bit DQ6 stops toggling when the
M88x3Fxx
FLASH+PSD
internal
logic
is
suspended. The
toggle Bit
status must be
monitored at an address within the Flash sector
being erased. The Toggle Bit will stop toggling
between 0.1
s and 15 s after the Erase Suspend
instruction has been executed. The M88x3Fxx
FLASH+PSD will then automatically be set to
Read Flash Block Memory Array mode.
If an Erase Suspend instruction was executed, the
following rules apply:
– Attempting to read from a Flash sector that was
being erased will output invalid data.
– Reading from a Flash sector that was not being
erased is valid.
– The Flash memory cannot be programmed,
and will only respond to Erase Resume and
Reset instructions (read is an operation and is
OK).
– If a Reset instruction is received, data in the
Flash sector that was being erased will be
invalid.
Flash Erase Resume Instruction
If an Erase Suspend instruction was previously
executed, the erase operation may be resumed by
this instruction. The Erase Resume instruction
consists of writing 030h to any address while an
appropriate Chip Select (FSi or CSBOOTi) is true.
(See Table 11.)
Flash and EEPROM Memory Specific Features
Flash and EEPROM Sector Protect
Each
Flash
and
EEPROM
sector can
be
separately protected against Program and Erase
functions. Sector Protection provides additional
data security because it disables all program or
erase operations. This mode can be activated
through the JTAG Port or a Device Programmer.
Sector protection can be selected for each sector
using the PSDsoft Configuration program.
This will automatically protect selected sectors
when the device is programmed through the JTAG
Port
or
a Device
Programmer.
Flash
and
Table 13. Sector Protection/Security Bit Definitio n – Flash Protection Register
Note: 1. Bit Definitions:
Sec<i>_Prot 1 = Flash or Flash Boot Sector <i> is write protected.
Sec<i>_Prot 0 = Flash or Flash Boot Sector <i> is not write protected.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sec7_Prot
Sec6_Prot
Sec5_Prot
Sec4_Prot
Sec3_Prot
Sec2_Prot
Sec1_Prot
Sec0_Prot
相关PDF资料 |
PDF描述 |
|---|---|
| M8813F2W-15K1 | 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52 |
| M8813F3W-15T1 | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| M8803F2Y-90T1 | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| M8803F3Y-90T1 | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| M8803F2Y-90T1T | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M8805/100-007 | 制造商:OTTO Engineering Inc 功能描述:M8805/100-007 |
| M8805/100-009 | 制造商:OTTO Engineering Inc 功能描述:M8805/100-009 |
| M8805/100-010 | 制造商:OTTO Engineering Inc 功能描述:M8805/100-010 |
| M8805/100-015 | 制造商:OTTO Engineering Inc 功能描述:M8805/100-015 |
| M8805/100-016 | 制造商:OTTO Engineering Inc 功能描述:M8805/100-016 |
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