CD4541BM データシートの表示（PDF） - Harris Semiconductor

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CD4541BM

CMOS Programmable Timer High Voltage Types (20V Rating)

Harris Semiconductor 

Functional Diagram

Functional Block Diagram

CD4541B

A 12

B 13

RTC

CTC

RS

AR

1

2

3

5

6

MR

10

MODE

9

Q/Q

SELECT

8

Q

VDD = PIN 14

VSS = PIN 7

12 13

†A †B

3

†RS

2

†CTC

1

†RTC

OSC

R

N

P

N

P

8-STAGE

COUNTER

R

216

OR

210 213 28

8-STAGE

COUNTER

R

1 OF 3

MUX

10

†MODE

R

8

Q

9

†Q/Q SELECT

VDD

5 PWR ON

RESET

6

MANUAL RESET†

VDD = 14

VSS = 7 NC = 4, 11

VSS

† All inputs are protected by CMOS Protection Network.

FIGURE 1.

FREQUENCY SELECTION TABLE

NO. OF

A

B

STAGES N

COUNT 2N

0

0

13

8192

0

1

10

1024

1

0

8

256

1

1

16

65536

TRUTH TABLE

STATE

PIN

0

1

5 Auto Reset On

Auto Reset Disable

6 Master Reset Off

Master Reset On

9 Output Initially Low After Output Initially High After

Reset (Q)

Reset (Q)

10 Single Transition Mode Recycle Mode

3

RS

CTC 2

INTERNAL

RESET

1

RTC

TO CLOCK

CKT

FIGURE 2. RC OSCILLATOR CIRCUIT

2

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