MAX194 Evaluation System/Evaluation Kit

18

______________________________________________________________________________________

Table 12. 68HC16 Chip-Select Outputs Truth Table

H

1xxxx read

H

7E0xx read

H

1xxxx write

H

7E8xx read

H

7E0xx write

H

7F0xx write

H

7F8xx write

H

7F8xx read

H

7F0xx read

H

7E8xx write

H

H

L

L

H

0xxxx read

CSBOOT

H

ADDRESS

RANGE

H

H

H

H

H

H

CS0

H

L

H

L

H

H

H

L

L

H

L

H

H

H

H

CS1

H

H

H

H

H

H

H

CS2

H

H

H

H

L

L

L

H

H

L

H

L

H

H

L

CS5

L

L

L

L

L

L

H

CS6

H

L

H

H

L

H

H

H

H

H

H

H

H

H

L

CS7

H

H

H

H

H

L

H

CS8

H

H

H

H

H

L

H

H

L

H

H

CS9

H

H

H

H

H

H

L

L

H

H

H

CS10

19

1

2

3

4

5

6

7

8

9

CS6/IOBUFFER

CS1/RDIO

D08

D09

D10

D11

D12

D13

D14

D15

18

17

16

15

14

13

12

11

EXTD0

EXTD1

EXTD2

EXTD3

EXTD4

EXTD5

EXTD6

EXTD7

C13

0.1

µF

R5

470

Ω

LED1

GND

PWMB

VCC

VCC

VCC

TSTME

BKPT/DSCLK

BKPT/DSCLK

HALT

BERR

MODCLK

DSACK1

DSACK0

IRQ7

2

3

4

5

6

7

8

9

10

R6

10k

SIP

RESISTOR

1

DS

GND

GND

RESET

VCC

J4-1

J4-3

J4-5

J4-7

J4-9

J4-2

J4-4

J4-6

J4-8

J4-10

BERR

BKPT/DSCLK

FREEZE

IPIPE1/DSI

IPIPE0/DS0

OE

DIR

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

U6

74HCT245

J1-1

J1-3

J1-5

J1-7

J1-9

J1-11

J1-13

J1-15

J1-17

J1-19

J1-21

J1-23

J1-25

J1-27

J1-29

J1-31

J1-33

J1-35

J1-37

J1-39

J1-2

J1-4

J1-6

J1-8

J1-10

J1-12

J1-14

J1-16

J1-18

J1-20

J1-22

J1-24

J1-26

J1-28

J1-30

J1-32

J1-34

J1-36

J1-38

J1-40

GND

GND

VPREREG

VCC

CS1/RDIO

CS7/7E000

CS9/7F000

A00

A02

EXTD0

EXTD2

EXTD4

EXTD6

IC1

IC3

OC2

OC4

MISO

SCK

CLKOUT

GND

GND

VPREREG

VCC

CS5/WRIO

CS8/7E800

CS10/7F800

A01

A03

EXTD1

EXTD3

EXTD5

EXTD7

IC2

OC1

OC3

IC4

MOSI

PCSO/SS

PWMA

GROUND

UNREGULATED 7V TO 20V

REGULATED +5V

INTEL COMPATIBLE READ/WRITE STROBES

CHIP SELECTS

LOW ADDRESS BITS

8-BIT BUFFERED BIDIRECTIONAL DATA BUS

8-BIT GENERAL I/O PORT

HIGH-SPEED SERIAL INTERFACE (QSM/QSPI)

Figure 5. 68HC16 Module Schematic