ST10F276Z5 STMicroelectronics, ST10F276Z5 Datasheet - Page 28
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ST10F276Z5
Manufacturer Part Number
ST10F276Z5
Description
16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
Manufacturer
STMicroelectronics
Datasheet
1.ST10F276Z5.pdf
(239 pages)
Specifications of ST10F276Z5
Single Voltage Supply
5V ±10% (embedded regulator for 1.8 V core supply)
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Internal Flash memory
4.2.3
Note:
4.3
Note:
28/239
Table 6.
Low power mode
The Flash modules are automatically switched off executing PWRDN instruction. The
consumption is drastically reduced, but exiting this state can require a long time (t
Recovery time from Power-down mode for the Flash modules is anyway shorter than the
main oscillator start-up time. To avoid any problem in restarting to fetch code from the Flash,
it is important to size properly the external circuit on RPD pin.
Power-off Flash mode is entered only at the end of the eventually running Flash write
operation.
Write operation
The Flash modules have one single register interface mapped in the memory space of the
XFlash module (0x0E 0000 to 0x0E 0013). All the operations are enabled through four 16-bit
control registers: Flash Control Register 1-0 High/Low (FCR1H/L-FCR0H/L). Eight other 16-
bit registers are used to store Flash Address and Data for Program operations (FARH/L and
FDR1H/L-FDR0H/L) and Write Operation Error flags (FERH/L). All registers are accessible
with 8 and 16-bit instructions (since mapped on ST10 XBUS).
Before accessing the XFlash module (and consequently also the Flash register to be used
for program/erasing operations), bit XFLASHEN in XPERCON register and bit XPEN in
SYSCON register shall be set.
The 4 Banks have their own dedicated sense amplifiers, so that any Bank can be read while
any other Bank is written. However simultaneous write operations (“write” means either
Program or Erase) on different Banks are forbidden: when there is a write operation on
going (Program or Erase) anywhere in the Flash, no other write operation can be performed.
During a Flash write operation any attempt to read the bank under modification will output
invalid data (software trap 009Bh). This means that the Flash Bank is not fetchable when a
write operation is active: the write operation commands must be executed from another
FCR1-0
FDR1-0
FAR
FER
FNVWPXR
FNVWPIR
FNVAPR0
FNVAPR1
XFICR
Bank
Flash control registers 1-0
Flash data registers 1-0
Flash address registers
Flash error register
Flash non volatile protection
X register
Flash non volatile protection
I register
Flash non volatile access
protection register 0
Flash non volatile access
protection register 1
XFlash interface control register
Control register interface
Description
0x000E DFBC - 0x000E DFBF
0x000E DFB0 - 0x000E DFB3
0x000E DFB4 - 0x000E DFB7
0x000E DFB8 - 0x000E DFB9
0x000E E000 - 0x000E E001
0x000E 0000 - 0x000E 0007
0x000E 0008 - 0x000E 000F
0x000E 0010 - 0x000E 0013
0x000E 0014 - 0x000E 0015
Addresses
8 byte
8 byte
4 byte
2 byte
4 byte
4 byte
2 byte
4 byte
2 byte
Size
ST10F276Z5
PD
bus size
(X-BUS)
).
16-bit
ST10
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