M68HC05 datasheet(32/118 Pages) FREESCALE

32 / 118 page

Memory

MC68HC05C9A Advance Information Data Sheet, Rev. 4.1

Freescale Semiconductor

$0019

Timer Register Low

(TRL)

See page 55.

Read:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Write:

Reset:

$001A

Alternate Timer Register High

(ATRH)

See page 55.

Read:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Write:

Reset:

$001B

Alternate Timer Register Low

(ATRL)

See page 55.

Read:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Write:

Reset:

$001C

EPROM Programming Register

(EPR)

Read:

LATCH

EPGM

Write:

Reset:

$001D

COP Reset Register

(COPRST) C9A Only

See page 41.

Read:

Write:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reset:

$001E

COP Control Register

(COPCR) C9A Only

See page 42.

Read:

COPF

CME

COPE

CM1

CM0

Write:

Reset:

$001F

Reserved

Addr.

Bit 7

Bit 0

= Unimplemented

= Reserved

U = Unaffected

Figure 2-4. Input/Output Registers (Sheet 3 of 3)

M68HC05 Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

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