Holtek Semiconductor Inc HT1627 Datasheet

RAM Mapping 64´16 LCD Controller for I/O mC

Features

Operating voltage: 2.7V~5.2V

·

Built-in RC oscillator

·

1/5 bias, 1/16 duty, frame frequency is 64Hz

·

Max. 64´16 patterns, 16 commons,

·

64 segments Built-in internal resistor type bias generator

·

3-wire serial interface

·

8 kinds of time base /WDT selection

·

Time base or WDT overflow output

·

Built-in LCD display RAM

·

General Description

HT1627 is a peripheral device specially de signed for I/O type mC used to expand the dis play capability. The max. display segment of the device are 1024 patterns (64´16). It also supports serial interface, buzzer sound, Watch dog Timer or time base timer functions. The HT1627 is a memory mapping and multi-func tion LCD controller. The software configuration

HT1627

R/W address auto increment

·

Two selection buzzer frequencies

·

(2kHz/4kHz) Power down command reduces power

·

consumption Software configuration feature

·

Data mode and Command mode instructions

·

Three data accessing modes

·

VLCD pin to adjust LCD operating voltage

·

Cascade application

·

feature of the HT1627 make it suitable for mul

tiple LCD applications including LCD modules

and display subsystems. Only three lines are required for the interface between the host con troller and the HT1627. The HT162X series

have many kinds of products that match vari ous applications.

-

Selection Table

HT162X HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 HT1627 HT16270

COM 448 8 8816

SEG 32 32 32 32 48 64 48

Built-in Osc.

Crystal Osc.

ÖÖ Ö ÖÖÖ Ö

ÖÖ ÖÖÖ Ö

1 April 21, 2000

16

64

16

64

Block Diagram

OSCI

CS

RD

WR

DATA

C ontrol

and Tim ing Circuit

D isplay R A M

LCD Driver/ Bias Circuit

HT1627

COM 0

COM 15

SEG 0

Pin Assignment

VDD

VSS

BZ

CS RD

WR

DATA

VSS

OSCI

VDD

VLCD

IR Q

COM 0 COM 1 COM 2 COM 3 COM 4 COM 5 COM 6 COM 7 COM 8

COM 9 COM 10 COM 11 COM 12

NC NC

BZ BZ T1 T2 T3

T4

Tone Frequency

G enerator

SEG 61

SEG 60

SEG 59

SEG 63

SEG 62

100

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

31

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

COM 13

COM 14

SEG 58

SEG 2

SEG 0

SEG 1

COM 15

W atchdog Tim er

Tim e Base G enerator

SEG 56

SEG 55

SEG 54

SEG 57

SEG 53

H T1627

100 Q FP

SEG 3

SEG 6

SEG 4

SEG 5

SEG 7

SEG 8

and

SEG 52

SEG 48

SEG 51

SEG 50

SEG 49

SEG 9

SEG 10

SEG 11

SEG 12

SEG 63

VLCD

IR Q

SEG 47

SEG 46

SEG 45

SEG 44

81828384858687888990919293949596979899

SEG 43

80

SEG 42

79 78

NC

77

SEG 41 SEG 40

76 75

SEG 39

74

SEG 38

73

SEG 37

72

SEG 36

71

SEG 35

70

SEG 34

69

SEG 33

68

SEG 32

67

SEG 31

66

SEG 30

65

SEG 29

64

SEG 28

63

SEG 27

62

SEG 26

61

SEG 25

60

SEG 24

59

SEG 23

58

SEG 22

57

SEG 21

56

SEG 20

55

SEG 19

54

NC

53

NC

52

SEG 18

51

SEG 17

SEG 13

SEG 14

SEG 15

SEG 16

2 April 21, 2000

Pad Assignment

WR

RD

CS

HT1627

SEG 42

SEG 44

SEG 46

SEG 48

SEG 50

SEG 52

SEG 54

SEG 56

SEG 58

SEG 60

SEG 62

SEG 63

SEG 59

SEG 61

SEG 55

SEG 57

SEG 51

SEG 53

SEG 47

SEG 49

SEG 43

SEG 45

DATA

VSS

OSCI

VDD

VLCD

IR Q

BZ

T1

T2 T3

T4

COM 0

COM 1 COM 2

COM 3 COM 4

COM 5 COM 6

COM 7 COM 8

COM 9

91

90

92

9495

93

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

24

23

22

25

COM 11

COM 10

COM 12

89

88

28 29

26

27

COM 14

COM 13

COM 15

SEG 0

85

86

84

87

82

83

798081

78

(0 ,0 )

32

33

34

363738

30

31

SEG 1

SEG 2

SEG 3

35

SEG 4

SEG 5

SEG 6

SEG 7

SEG 8

40

39

SEG 9

SEG 10

SEG 11

74

73

75

7677

43 44 45

41

42

SEG 12

SEG 13

SEG 14

71

72

SEG 41

70

SEG 40

69

68

SEG 39

SEG 38

67

66

SEG 37

SEG 36

65

64

SEG 35

63

SEG 34

62

SEG 33

61

SEG 32

60

SEG 31

SEG 30

59

SEG 29

58

SEG 28

57

SEG 27

56

55

SEG 26

54

SEG 25

53

SEG 24

52

SEG 23

51

SEG 22

50

SEG 21

49

SEG 20

48

SEG 19

47

SEG 18

46

SEG 15

SEG 16

SEG 17

Chip size: 245 ´ 237 (mil)

2

* The IC substrate should be connected to VDD in the PCB layout artwork.

3 April 21, 2000

HT1627

Pad Coordinates Unit: mil

Pad No. X Y Pad No. X Y Pad No. X Y

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

-116.62

-116.71

-115.94

-116.71

-115.94

-115.94 -0.60

-115.94 -7.22

-115.94 -19.21

-115.94 -25.84

-115.94 -37.83

-115.94 -44.46

-115.94 -56.44

-115.94 -63.07

-115.94 -75.06

-115.94 -81.68

-115.94 -93.67

-115.94 -100.30

-115.94 -112.29

-108.04 -112.03

-96.05 -112.03

-89.42 -112.03

-77.43 -112.03

-70.81 -112.03

-58.82 -112.03

-52.19 -112.03

-40.21 -112.03

-33.58 -112.03

-21.59 -112.03

99.88 33

86.32 34

78.75 35 3.65

72.12 36 15.64

65.49 37 22.27

55.97 38 34.26

41.44 39 40.88

21.84 40 52.87

11.39 41 59.50 42 71.49 43 78.11 44 90.10 45 96.73 46 108.71 47 116.15 48 116.15 9.83 80 25.58 112.24 49 116.15 50 116.15 51 116.15 52 116.15 53 116.15 54 116.15 55 116.15 56 116.15 57 116.15 58 116.15 59 116.15 60 116.15 11.86 92 61 116.15 18.49 93 62 116.15 30.47 94 63 116.15 37.10 95 64 116.15 49.09

-14.96 -112.03

-2.97 -112.03

-112.03

-111.82

-93.20

-81.22

-74.59

-62.60

-55.97

-43.99

-37.36

-25.37

-18.74

-6.76

-0.13

65 116.15 55.72 66 116.15 67.70 67 116.15 74.33 68 116.15 86.32 69 116.15 92.95 70 116.15 104.93 71 112.03 112.24 72 100.04 112.24 73 93.42 112.24 74 81.43 112.24 75 74.80 112.24 76 62.81 112.24 77 56.19 112.24 78 44.20 112.24 79 37.57 112.24

81 18.95 112.24 82 6.97 112.24 83 0.34 112.24 84 85 86 87 88 89 90 91

-11.65

-18.27

-30.26

-36.89

-48.88

-55.51

-67.49

-74.12

-86.11

-92.74

-104.72

-114.24

112.24

4 April 21, 2000

Pad Description

Pad No. Pad Name I/O Description

1 DATA I/O Serial data input/output with pull-high resistor

2 VSS

3 OSCI I

4 VDD

5 VLCD I LCD operating voltage input pad.

6 IRQ

7, 8 BZ, BZ

9~12 T1~T4 I Not connected

13~28 COM0~COM15 O LCD common outputs

29~92 SEG0~SEG63 O LCD segment outputs

93 CS

94 RD

95 WR

Negative power supply, Ground

¾

If the system clock comes from an external clock source, the ex ternal clock source should be connected to the OSCI pad.

Positive power supply

¾

Time base or Watchdog Timer overflow flag, NMOS open drain

O

output

2kHz or 4kHz tone frequency output pair (Tri-state output

O

buffer)

Chip selection input with pull-high resistor. When the CS logic high, the data and command read from or write to the HT1627 are disabled. The serial interface circuit is also reset.

I

But if the CS data and command transmission between the host controller and the HT1627 are all enabled.

READ clock input with pull-high resistor. Data in the RAM of the HT1627 are clocked out on the rising edge of the RD

I

The clocked out data will appear on the data line. The host controller can use the next falling edge to latch the clocked out data.

WRITE clock input with pull-high resistor. Data on the DATA

I

line are latched into the HT1627 on the rising edge of the WR signal.

is at logic low level and is input to the CS pad, the

HT1627

-

is

signal.

Absolute Maximum Ratings

Supply Voltage..............................-0.3V to 5.5V

Input Voltage ................V

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi

mum Ratings² may cause substantial damage to the device. Functional operation of this de vice at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

-0.3V to VDD+0.3V

SS

Storage Temperature.................-50°Cto125°C

Operating Temperature ..............-25°Cto75°C

5 April 21, 2000

-

HT1627

D.C. Characteristics

Symbol Parameter

V

I

V

I

R

DD

DD1

DD2

STB

IL

IH

OL1

OH1

OL2

OH2

OL3

OH3

OL4

OH4

PH

Operating Voltage

Operating Current

Standby Current

Input Low Voltage

Input High Voltage

BZ, BZ, IRQ

BZ, BZ

DATA

LCD Common Sink Current

LCD Common Source Current

LCD Segment Sink Current

LCD Segment Source Current

Pull-high Resistor

Test Conditions

Min. Typ. Max. Unit

V

DD

¾¾

3V

5V

3V

5V

3V

5V

3V

Conditions

No load/LCD ON On-chip RC oscillator

No load/LCD OFF On-chip RC oscillator

No load Power down mode

2.7

¾

0

¾

200 315

300 425

15 55

30 85

214

428

¾

DATA, WR,CS,RD

5V 0

3V

2.4

¾

DATA, WR,CS,RD

5V 4.0

V

3V

5V

3V

5V

3V

5V

3V

5V

3V

5V

3V

5V

3V

5V

3V

5V

3V

=0.3V

OL

=0.5V

V

OL

V

=2.7V

OH

V

=4.5V

OH

V

=0.3V

OL

=0.5V

V

OL

V

=2.7V

OH

V

=4.5V

OH

V

=0.3V

OL

=0.5V

V

OL

V

=2.7V

OH

V

=4.5V

OH

V

=0.3V

OL

=0.5V

V

OL

V

=2.7V

OH

V

=4.5V

OH

-0.9 -1.8 ¾

-1.7 -3 ¾

-0.9 -1.8 ¾

-1.7 -3 ¾

180 360

-40 -80 ¾mA

-90 -180 ¾mA

120 240

-30 -60 ¾mA

-70 -140 ¾mA

100 200 300

¾

0.9 1.8

1.7 3

0.9 1.8

1.7 3

80 160

50 100

DATA, WR,CS,RD

5V 50 100 150

Ta=25°C

5.2 V

mA

0.6 V

1.0 V

3V

5V

mA

¾

mA

¾

mA

¾

mA

¾

mA

¾mA

kW

6 April 21, 2000

Holtek Semiconductor Inc HT1627 Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual

Features

General Description

Selection Table

Block Diagram

Pin Assignment

Pad Assignment

Pad Coordinates Unit: mil

Pad Description

Absolute Maximum Ratings

D.C. Characteristics