MC9S08DZ96F2CLL datasheet(129/458 Pages) FREESCALE

129 / 458 page

Chapter 6 Parallel Input/Output Control

MC9S08DZ128 Series Data Sheet, Rev. 1

Freescale Semiconductor

129

6.5.8

Port H Registers

Port H is controlled by the registers listed below.

6.5.8.1

Port H Data Register (PTHD)

6.5.8.2

Port H Data Direction Register (PTHDD)

76543210

PTHD7

PTHD6

PTHD5

PTHD4

PTHD3

PTHD2

PTHD1

PTHD0

Reset:

00000000

Figure 6-47. Port H Data Register (PTHD)

Table 6-45. PTHD Register Field Descriptions

Field

Description

7:0

PTHD[7:0]

Port H Data Register Bits — For port H pins that are inputs, reads return the logic level on the pin. For port H

pins that are conﬁgured as outputs, reads return the last value written to this register.

Writes are latched into all bits of this register. For port H pins that are conﬁgured as outputs, the logic level is

driven out the corresponding MCU pin.

Reset forces PTHD to all 0s, but these 0s are not driven out the corresponding pins because reset also

conﬁgures all port pins as high-impedance inputs with pull-ups disabled.

76543210

PTHDD7

PTHDD6

PTHDD5

PTHDD4

PTHDD3

PTHDD2

PTHDD1

PTHDD0

Reset:

00000000

Figure 6-48. Port H Data Direction Register (PTHDD)

Table 6-46. PTHDD Register Field Descriptions

Field

Description

7:0

PTHDD[7:0]

Data Direction for Port H Bits — These read/write bits control the direction of port H pins and what is read for

PTHD reads.

0 Input (output driver disabled) and reads return the pin value.

1 Output driver enabled for port H bit n and PTHD reads return the contents of PTHDn.

MC9S08DZ96F2CLL bảng dữ liệu(PDF) 129 Page - Freescale Semiconductor, Inc

MC9S08DZ96F2CLL bảng dữ liệu(HTML) 129 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

bảng dữ liệu tải về

Link URL