SC9RS08KA2 datasheet(48/134 Pages) FREESCALE

48 / 134 page

Chapter 6 Parallel Input/Output Control

SC9RS08KA2 Series Data Sheet, Rev. 1

Freescale Semiconductor

corresponding pulling device enable register bit. The pulling device is also disabled if the pin is controlled

by an analog function.

6.3.1.2

Pullup/Pulldown Control

Pullup/pulldown control is used to select the pullup or pulldown device enabled by the corresponding

PTAPE bit.

Figure 6-5. Pullup/Pulldown Device Control for Port A (PTAPUD)

6.3.1.3

Output Slew Rate Control Enable

Slew rate control can be enabled for each port pin by setting the corresponding bit in the slew rate control

reduce EMC emissions. Slew rate control has no effect on pins that are configured as inputs.

321

PTAPE5

PTAPE4

PTAPE2

PTAPE1

PTAPE0

Reset:

000

Figure 6-4. Internal Pulling Device Enable for Port A Register (PTAPE)

Table 6-3. PTAPE Register Field Descriptions

Field

Description

5:4,2:0

PTAPE[5:4,2:0]

Internal Pulling Device Enable for Port A Bits — Each of these control bits determines whether the internal

pulling device is enabled for the associated PTA pin. For port A pins that are configured as outputs, these bits

have no effect and the internal pullup devices are disabled.

0 Internal pulling device disabled for port A bit n.

1 Internal pulling device enabled for port A bit n.

321

PTAPUD5

PTAPUD4

PTAPUD2

PTAPUD1

PTAPUD0

Reset:

000

Table 6-4. PTAPUD Register Field Descriptions

Field

Description

5:4,2:0

PTAPUD[5:4,2:0]

Pullup/Pulldown Device Control for Port A Bits — Each of these control bits determines whether the

internal pullup or pulldown device is selected for the associated PTA pin. The actual pullup/pulldown device

is only enabled by enabling the associated PTAPE bit.

0 Internal pullup device is selected for port A bit n.

1 Internal pulldown device is selected for port A bit n.

SC9RS08KA2 датащи(PDF) 48 Page - Freescale Semiconductor, Inc

SC9RS08KA2 датащи(HTML) 48 Page - Freescale Semiconductor, Inc

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

датащи скачать

ссылки URL