MC68HC05C8A Datasheet, PDF(98/158 Page) Motorola, Inc – Microcontrollers

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MC68HC05C8A Datasheet, PDF (98/158 Pages) Motorola, Inc – Microcontrollers

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Operating Modes

11.3 User Mode

In user mode, the address and data buses are not available externally,

but there are three 8-bit input/output (I/O) ports and one 7-bit input-only

port. This mode allows the MCU to function as a self-contained

microcontroller, with maximum use of the pins for on-chip peripheral

functions. All address and data activity occurs within the MCU. User

mode is entered on the rising edge of RESET if the IRQ pin is within

normal operating range.

RESET

1

IRQ

2

NC

3

PA7

4

PA6

5

PA5

6

PA4

7

PA3

8

PA2

9

PA1

10

PA0

11

PB0

12

PB1

13

PB2

14

PB3

15

PB4

16

PB5

17

PB6

18

PB7

19

VSS

20

40

VDD

39

OSC1

38

OSC2

37

TCAP

36

PD7

35

PD6/TCMP

34

PD5/SS

33

PD4/SCK

32

PD3/MOSI

31

PD2/MISO

30

PD1/TDO

29

PD0/RDI

28

PC0

27

PC1

26

PC2

25

PC3

24

PC4

23

PC5

22

PC6

21

PC7

Figure 11-1. User Mode Pinout

Technical Data

98

MC68HC05C8A â¢ MC68HCL05C8A â¢ MC68HSC05C8A â Rev. 5.0

Operating Modes

MOTOROLA

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