P912XDP512F0MFVR datasheet(148/1350 Pages) FREESCALE

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Chapter 4 Analog-to-Digital Converter (ATD10B16CV4) Block Description

MC9S12XDP512 Data Sheet, Rev. 2.17

148

Freescale Semiconductor

4.3.2.12

ATD Input Enable Register 0 (ATDDIEN0)

Read: Anytime

Write: anytime

4.3.2.13

ATD Input Enable Register 1 (ATDDIEN1)

Read: Anytime

Write: Anytime

76543210

IEN15

IEN14

IEN13

IEN12

IEN11

IEN10

IEN9

IEN8

Reset

00000000

Figure 4-14. ATD Input Enable Register 0 (ATDDIEN0)

Table 4-23. ATDDIEN0 Field Descriptions

Field

Description

7:0

IEN[15:8]

ATD Digital Input Enable on Channel Bits — This bit controls the digital input buffer from the analog input

pin (ANx) to PTADx data register.

0 Disable digital input buffer to PTADx

1 Enable digital input buffer to PTADx.

Note: Setting this bit will enable the corresponding digital input buffer continuously. If this bit is set while

simultaneously using it as an analog port, there is potentially increased power consumption because the

digital input buffer maybe in the linear region.

76543210

IEN7

IEN6

IEN5

IEN4

IEN3

IEN2

IEN1

IEN0

Reset

00000000

Figure 4-15. ATD Input Enable Register 1 (ATDDIEN1)

Table 4-24. ATDDIEN1 Field Descriptions

Field

Description

7:0

IEN[7:0]

ATD Digital Input Enable on Channel Bits — This bit controls the digital input buffer from the analog input

pin (ANx) to PTADx data register.

0 Disable digital input buffer to PTADx

1 Enable digital input buffer to PTADx.

Note: Setting this bit will enable the corresponding digital input buffer continuously. If this bit is set while

simultaneously using it as an analog port, there is potentially increased power consumption because the

digital input buffer maybe in the linear region.

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