STM8S007C8 datasheet(38/93 Pages) STMICROELECTRONICS

38 / 93 page

Option bytes

STM8S007C8

38/93

DS8633 Rev 6

Option bytes

Option bytes contain configurations for device hardware features as well as the memory

protection of the device. They are stored in a dedicated block of the memory. Except for the

ROP (read-out protection) byte, each option byte has to be stored twice, in a regular form

(OPTx) and a complemented one (NOPTx) for redundancy.

Option bytes can be modified in ICP mode (via SWIM) by accessing the EEPROM address

shown in Table 11: Option bytes below. Option bytes can also be modified ‘on the fly’ by the

application in IAP mode, except the ROP option that can only be modified in ICP mode (via

SWIM).

Refer to the STM8S Flash programming manual (PM0051) and STM8 SWIM

communication protocol and debug module user manual (UM0470) for information on SWIM

programming procedures.

Table 11. Option bytes

Addr.

Option

name

Option

byte no.

Option bits

Factory

default

setting

7654

3210

0x4800

Read-out

protection

(ROP)

OPT0

ROP[7:0]

0x00

0x4801

User boot code

(UBC)

OPT1

UBC[7:0]

0x00

0x4802

NOPT1

NUBC[7:0]

0xFF

0x4803

Alternate

function

remapping

(AFR)

OPT2

AFR7

AFR6

AFR5

Reserve

AFR3

AFR2

AFR1

AFR0

0x00

0x4804

NOPT2

NAFR7

NAFR6

NAFR5

NAFR4

NAFR3

NAFR2

NAFR1

NAFR0

0xFF

0x4805

Watchdog

option

OPT3

Reserved

LSI

_EN

IWDG

_HW

WWDG

_HW

WWDG

_HALT

0x00

0x4806

NOPT3

Reserved

NLSI

_EN

NIWDG

_HW

NWWDG

_HW

NWWDG

_HALT

0xFF

0x4807

Clock option

OPT4

Reserved

EXT

CLK

CKAWU

SEL

PRS

0x00

0x4808

NOPT4

Reserved

CLK

NCKAW

USEL

NPR

SC1

NPR

SC0

0xFF

0x4809

HSE clock

startup

OPT5

HSECNT[7:0]

0x00

0x480A

NOPT5

NHSECNT[7:0]

0xFF

0x480B

Reserved

OPT6

Reserved

0x00

0x480C

NOPT6

Reserved

0xFF

0x480D

Flash wait

states

OPT7

Reserved

Wait

state

0x00

0x480E

NOPT7

Reserved

Nwait

state

0xFF

0x487E

Bootloader

OPTBL

BL[7:0]

0x00

0x487F

NOPTBL

NBL[7:0]

0xFF

STM8S007C8 bảng dữ liệu(PDF) 38 Page - STMicroelectronics

STM8S007C8 bảng dữ liệu(HTML) 38 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

bảng dữ liệu tải về

Link URL