ST72561 datasheet(255/262 Pages) STMICROELECTRONICS

255 / 262 page

ST72561

255/262

FLASH OPTION BYTES (Cont’d)

OPT2:1= PKG[1:0] Package selection

These option bits select the device package.

Note: Pads that are not bonded to external pins

are in input pull-up configuration when the pack-

age selection option bits have been properly pro-

grammed. The configuration of these pads must

be kept in reset state to avoid added current con-

sumption.

OPT0= FMP_R Flash memory read-out protection

Readout protection, when selected provides a pro-

tection against program memory content extrac-

tion and against write access to Flash memory.

Erasing the option bytes when the FMP_R option

is selected causes the whole user memory to be

erased first, and the device can be reprogrammed.

Refer to Section 4.3.1 and the ST7 Flash Pro-

gramming Reference Manual for more details.

0: Read-out protection enabled

1: Read-out protection disabled

OPTION BYTE 1

OPT7:6 = AFI_MAP[1:0] AFI Mapping

These option bits allow the mapping of some of the

Alternate Functions to be changed.

OPT5:4 = OSCTYPE[1:0] Oscillator Type

These option bits select the ST7 main clock

source type.

OPT3:2 = OSCRANGE[1:0] Oscillator range

If the resonator oscillator type is selected, these

option bits select the resonator oscillator. This se-

lection corresponds to the frequency range of the

resonator used. If external source is selected with

the OSCTYPE option, then the OSCRANGE op-

tion must be selected with the corresponding

range.

OPT1 = Reserved

OPT0 = RSTC RESET clock cycle selection

This option bit selects the number of CPU cycles

inserted during the RESET phase and when exit-

ing HALT mode. For resonator oscillators, it is ad-

vised to select 4096 due to the long crystal stabili-

zation time.

0: Reset phase with 4096 CPU cycles

1: Reset phase with 256 CPU cycles

Selected Package

PKG

TQFP 64

TQFP 44

TQFP 32

AFI Mapping 1

AFI_MAP(1)

T16_OCMP1 on PD3

T16_OCMP2 on PD5

T16_ICAP1 on PD4

LINSCI2_SCK not available

LINSCI2_TDO not available

LINSCI2_RDI not available

T16_OCMP1 on PB6

T16_OCMP2 on PB7

T16_ICAP1 on PC0

LINSCI2_SCK on PD3

LINSCI2_TDO on PD5

LINSCI2_RDI on PD4

AFI Mapping 0

AFI_MAP(0)

T16_ICAP2 is mapped on PD1

T16_ICAP2 is mapped on PC1

Clock Source

OSCTYPE

Resonator Oscillator

Reserved

Reserved internal clock source

(used only in ICC mode)

External Source

Typ. Freq. Range

OSCRANGE

1~2MHz

2~4MHz

4~8MHz

8~16MHz

AFI Mapping 1

AFI_MAP(1)

ST72561 Datasheet(PDF) 255 Page - STMicroelectronics

ST72561 Datasheet(HTML) 255 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 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL