ST92F150-EVAL STMicroelectronics, ST92F150-EVAL Datasheet - Page 56
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ST92F150-EVAL
Manufacturer Part Number
ST92F150-EVAL
Description
BOARD EVALUATION FOR ST9 SERIES
Manufacturer
STMicroelectronics
Specifications of ST92F150-EVAL
Processor To Be Evaluated
ST90158 and ST92F1x Daughter Board
Interface Type
I2C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-2905
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ST92F124/F150/F250 - SINGLE VOLTAGE FLASH & E3 TM (EMULATED EEPROM)
3.3 REGISTER DESCRIPTION
3.3.1 Control Registers
FLASH CONTROL REGISTER (FCR)
Address: 224000h / 221000h- Read/Write
Reset value: 0000 0000 (00h)
The Flash Control Register is used to enable all
the operations for the Flash and the TestFlash
memories.
Bit 7 = FWMS: Flash Write Mode Start (Read/
Write).
This bit must be set to start each write/erase oper-
ation in Flash memory. At the end of the write/
erase operation or during a Sector Erase Suspend
this bit is automatically reset. To resume a sus-
pended Sector Erase operation, this bit must be
set again. Resetting this bit by software does not
stop the current write operation.
0: No effect
1: Start Flash write
Bit 6 = FPAGE: Flash Page program (Read/Write).
This bit must be set to select the Page Program
operation in Flash memory. This bit is automatical-
ly reset at the end of the Page Program operation.
The Page Program operation allows to program
“0”s in place of “1”s. From 1 to 16 bytes can be en-
tered (in any order, no need for an ordered ad-
dress sequence) before starting the execution by
setting the FWMS bit. All the addresses must be-
long to the same page (only the 4 LSBs of address
can change). Data to be programmed and ad-
dresses in which to program must be provided
(through an LD instruction, for example). Data
contained in page addresses that are not entered
are left unchanged.
0: Deselect page program
1: Select page program
Bit 5 = FCHIP: Flash CHIP erase (Read/Write).
This bit must be set to select the Chip Erase oper-
ation in Flash memory. This bit is automatically re-
set at the end of the Chip Erase operation.
The Chip Erase operation erases all the Flash lo-
cations to FFh. The operation is limited to Flash
56/429
FWMS FPAGE FCHIP FBYTE FSECT FSUSP PROT FBUSY
9
7
6
5
4
3
2
1
0
code: sectors F0-F3 (or F0-F5 for the ST92F250),
TestFlash and
starts by setting the FWMS bit. It is not necessary
to pre-program the sectors to 00h, because this is
done automatically.
0: Deselect chip erase
1: Select chip erase
Bit 4 = FBYTE: Flash byte program (Read/Write).
This bit must be set to select the Byte Program op-
eration in Flash memory. This bit is automatically
reset at the end of the Byte Program operation.
The Byte Program operation allows “0”s to be pro-
grammed in place of “1”s. Data to be programmed
and an address in which to program must be pro-
vided (through an LD instruction, for example) be-
fore starting execution by setting bit FWMS.
0: Deselect byte program
1: Select byte program
Bit 3 = FSECT: Flash sector erase (Read/Write).
This bit must be set to select the Sector Erase op-
eration in Flash memory. This bit is automatically
reset at the end of the Sector Erase operation.
The Sector Erase operation erases all the Flash
locations to FFh. From 1 to 6 sectors (F0-F5) can
be simultaneously erased. These sectors can be
entered before starting the execution by setting
the FWMS bit. An address located in the sector to
erase must be provided (through an LD instruc-
tion, for example), while the data to be provided is
don’t care. It is not necessary to pre-program the
sectors to 00h, because this is done automatically.
0: Deselect sector erase
1: Select sector erase
Bit 2 = FSUSP: Flash sector erase suspend
(Read/Write).
This bit must be set to suspend the current Sector
Erase operation in Flash memory in order to read
data to or from program data to a sector not being
erased. The FSUSP bit must be reset (and FWMS
must be set again) to resume a suspended Sector
Erase operation.
The Erase Suspend operation resets the Flash
memory to normal read mode (automatically reset-
ting bit FBUSY) in a maximum time of 15μs.
E
3 TM
excluded. The execution
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