ZPSD312-B-15M 查看數據表（PDF） - STMicroelectronics

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ZPSD312-B-15M

Low Cost Field Programmable Microcontroller Peripherals

STMicroelectronics 

PSD3XX Family

14.0

System

Applications

(cont.)

In Figure 12, the PSD3XX is configured to interface with Motorola’s 68HC11, which is a

16-bit address/8-bit data bus microcontroller. Its data bus is multiplexed with the low-order

address byte. The 68HC11 uses E and R/W signals to derive the read and write strobes.

It uses the Address Strobe (AS) for the address latch pulse. RESET is an active-low signal.

The rest of the configuration bits, as well as the unconnected signals, are specific, and thus,

user dependent.

Figure 12. PSD3XX Interface With Motorola’s 68HC11

VCC

MICROCONTROLLER

0.1µF

44

) 20 PD0

t(s 21 PD1

22 PD2

c 23 PD3

u 24 PD4

d 25 PD5

Pro t(s) 43 PE0

45 PE1

te c 47 PE2

le u 49 PE3

d 44 PD4

so ro 46 PE5

48 PE6

b P 50 PE7

- O te 34 PA0

) le 33 PA1

t(s o 32 PA2

s 31 PA3

c b 30 PA4

29 PA5

u O 28 PA6

d - 27 PA7

Pro t(s) 52 VRH

51 VRL

PC0 9

PC1

PC2

10

11

PC3

PC4

12

13

PC5 14

PC6

PC7

15

16

PB0 42

PB1 41

PB2

PB3

40

39

PB4

PB5

38

37

PB6 36

PB7 35

E5

R/W 6

AS

RESET

4

17

XIRQ

IRQ

18

19

MODB

MODA

2

3

te c XTAL EXTAL

le du68HC11

OObbssoolete ProRESET

23

24

25

26

27

28

29

30

AD0/A0

AD1/A1

AD2/A2

AD3/A3

AD4/A4

AD5/A5

AD6/A6

AD7/A7

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

21

20

19

18

17

16

15

14

31

32

33

35

36

37

38

39

AD8/A8

AD9/A9

AD10/A10

AD11/A11

AD12/A12

AD13/A13

AD14/A14

AD15/A15

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

11

10

9

8

7

6

5

4

VCC

22 E

2

13

3

1

R/W/VPP

AS

RESET

BHE/PSEN

PC0

PC1

PC2

40

41

42

A19/CSI 43

PSD3XX

GND

34 12

28

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