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Holtek Semiconductor Inc
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HT1625
Datasheet
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Holtek Semiconductor Inc HT1625 Datasheet

RAM Mapping 64´8 LCD Controller for I/O mC

Features

Operating voltage: 2.7V~5.2V
·
Built-in RC oscillator
·
External 32.768kHz crystal or 32kHz
·
frequency source input 1/4 bias, 1/8 duty, frame frequency is 64Hz
·
Max. 64´8 patterns, 8 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

HT1625 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 512 patterns (64´8). It also sup ports serial interface, buzzer sound, Watchdog Timer or time base timer functions. The HT1625 is a memory mapping and multi-function LCD controller. The software
HT1625
R/W address auto increment
·
Two selectable 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
·
configuration feature of the HT1625 make it
­suitable for multiple LCD applications includ
­ing LCD modules and display subsystems. Only three lines are required for the interface be
­tween the host controller and the HT1625. The HT162X series have many kinds of products that match various applications.
-
-

Selection Table

HT162X HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 HT1627 HT16270
COM 448 8 8
SEG 32 32 32 32 48
Built-in Osc.
Crystal Osc.
ÖÖ Ö ÖÖÖ Ö
ÖÖ ÖÖÖ Ö
1 April 21, 2000
8
16 16 16
48 64 64

Block Diagram

HT1625

Pin Assignment

OSCO
OSCI
CS
RD
WR
DATA
VDD
VSS
BZ
BZ
DATA
VSS OSCI OSCO
VDD
VLCD
IR Q
COM 0 COM 1 COM 2 COM 3
COM 4
COM 5
COM 6
CS
RD
WR
BZ BZ
T1 T2 T3
NC
NC NC NC NC
NC
NC
NC
D ispla y R A M
C ontrol
and Tim ing Circuit
Tone Frequency
G enerator
SEG 56
SEG 55
SEG 61
SEG 63
SEG 62
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 7NCNC
SEG 57
SEG 60
SEG 59
SEG 58
H T1625
100 Q FP
SEG 2
SEG 0
SEG 1
SEG 3
SEG 4
LC D D river/ Bias Circuit
W atchdog Tim er
and
Tim e Base G enerator
SEG 54
SEG 53
SEG 52
SEG 51
SEG 50
SEG 49
SEG 6
SEG 5
SEG 7
SEG 8
SEG 9
SEG 10
SEG 11
SEG 48
SEG 12
COM 0
COM 7
SEG 0
SEG 63
VLCD
IR Q
SEG 47
SEG 46
SEG 45
SEG 44
81828384858687888990919293949596979899100
SEG43
80 79
NC SEG42
78
SEG41
77
SEG40
76
SEG39
75
SEG38
74 73
SEG37 SEG36
72
SEG35
71
SEG34
70
SEG33
69
SEG32
68
SEG31
67
SEG30
66
SEG29
65
SEG28
64 63
SEG27
62
SEG26
61
SEG25
60
SEG24
59
SEG23
58
SEG22
57
SEG21
56
NC
55
NC
54
SEG20
53
SEG19
52
SEG18
51
SEG17
SEG 13
SEG 14
SEG 15
SEG 16
2 April 21, 2000
Pad Assignment
CS
HT1625
SEG 43
SEG 44
SEG 45
SEG 46
SEG 47
SEG 48
SEG 49
SEG 50
SEG 51
SEG 52
SEG 53
SEG 54
SEG 55
SEG 56
SEG 57
SEG 58
SEG 59
SEG 60
SEG 61
SEG 62
SEG 63
RD
WR
DATA
VSS
OSCI
OSCO
VDD
VLCD
IR Q
BZ
BZ
T1
T2
T3
COM 0
COM 1
COM 2
COM 3
COM 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
COM 5
8542864387
21652266236724682569267027712872297330743175327633773478357936
COM 6
COM 7
SEG 0
SEG 1
SEG 2
80
81
SEG 3
SEG 4
SEG 5
SEG 6
SEG 7
SEG 8
SEG 42
64
SEG 41
63
SEG 40
62
SEG 39
61
SEG 38
60
SEG 37
SEG 36
59
SEG 35
58
SEG 34
57
56
SEG 33
SEG 32
(0 , 0 )
37
38823983408441
SEG 9
SEG 10
SEG 11
SEG 12
SEG 13
SEG 14
SEG 15
SEG 16
SEG 17
SEG 18
55
54
SEG 31
53
SEG 30
52
SEG 29
51
SEG 28
50
SEG 27
49
SEG 26
48
SEG 25
47
SEG 24
46
SEG 23
SEG 22
45
SEG 21
44
SEG 20
SEG 19
Chip size: 192 ´ 211 (mil)
2
* The IC substrate should be connected to VDD in the PCB layout artwork.
3 April 21, 2000

Pad Coordinates Unit: mil

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 33 3.02 34 9.65 35 16.28 36 22.91 37 29.54 38 41.52 39 48.15 40 60.14 41 66.77 42 78.75 43 90.57 44 90.57
-90.18
-90.18
-90.18
-90.18
-89.42
-89.42
-90.18
-90.18
-90.18
-90.18
-90.18
-90.18 -3.61
-90.18 -10.24
-90.18 -16.87
-90.18 -23.50
-90.18 -30.13
-90.18 -36.76
-90.18 -43.39
-90.18 -92.22
-83.17 -99.53
-76.54 -99.53
-69.91 -99.53
-63.28 -99.53
-56.65 -99.53
-50.02 -99.53
-43.39 -99.53
-36.76 -99.53
-30.13 -99.53
-23.50 -99.53
-16.87 -99.53
-10.24 -99.53
-3.61 -99.53
98.56 45 90.57
91.93 46 90.57
85.30 47 89.80
75.95 48 89.80
57.76 49 89.80
45.77 50 89.80
39.14 51 89.80
32.51 52 89.80
25.03 53 89.80
15.94 54 89.80
5.82 55 89.80 6.33 56 89.80 12.96 57 89.80 24.95 58 89.80 31.58 59 89.80 43.56 60 89.80 50.19 61 89.80 62.18 62 89.80 68.81 63 89.80 80.79 64 89.80 87.42 65 89.38 98.22 66 77.39 98.22 67 70.76 98.22 68 58.78 98.22 69 52.15 98.22 70 40.16 98.22 71 32.09 99.32 72 25.46 99.32 73 18.83 99.32 74 12.20 99.32 75 5.57 99.32
-99.53
-99.53
-99.53
-99.53
-98.60
-98.60
-98.60
-98.60
-98.60
-98.60
-97.79
-91.16
76 77 78 79 80 81 82 83 84 85 86 87
-1.06
-7.69
-14.32
-20.95
-27.58
-34.21
-40.84
-47.47
-54.10
-60.73
-67.36
-73.99
-84.53
-77.90
-68.13
-61.50
-49.51
-42.88
-30.90
-24.27
-12.28
-5.65
99.32
99.32
99.32
99.32
99.32
99.32
99.32
99.32
99.32
99.32
99.32
99.32
HT1625
4 April 21, 2000
HT1625

Pad Description

Pad No. Pad Name I/O Description
READ clock input with pull-high resistor. Data in the RAM of the HT1625 are clocked out on the rising edge of the RD
1RD
2WR
3 DATA I/O Serial data input/output with pull-high resistor
4 VSS
5 OSCI I The OSCI and OSCO pads are connected to a 32.768kHz crystal
6 OSCO O
7 VDD
8 VLCD I LCD operating voltage input pad.
9 IRQ
10, 11 BZ, BZ
12~14 T1~T3 I Not connected
15~22 COM0~COM7 O LCD common outputs
23~86 SEG0~SEG63 O LCD segment outputs
87 CS
I
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 HT1625 on the rising edge of the WR sig nal.
Negative power supply, Ground
¾
in order to generate a system clock. If the system clock comes from an external clock source, the external clock source should be connected to the OSCI pad. But if an on-chip RC oscillator is se lected instead, the OSCI and OSCO pads can be left open.
Positive power supply
¾
Time base or Watchdog Timer overflow flag, NMOS open drain
O
output
O 2kHz or 4kHz tone frequency output pair
Chip selection input with pull-high resistor. When the CS high, the data and command read from or write to the HT1625 are disabled. The serial interface circuit is also reset. But if the
I
CS
is at logic low level and is input to the CS pad, the data and command transmission between the host controller and the HT1625 are all enabled.
signal. The
-
-
is logic

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 device at other conditions beyond those listed in the specification is not implied and prolonged expo sure 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
-
-
HT1625

D.C. Characteristics

Symbol Parameter
V
DD
I
DD1
I
DD2
I
DD11
I
DD22
I
STB
V
IL
V
IH
I
OL1
I
OH1
I
OL1
I
OH1
I
OL2
I
OH2
I
OL3
I
OH3
R
PH
Operating Voltage
Operating Current
Operating Current
Operating Current
Operating Current
Standby Current
Input Low Voltage
Input High Voltage
BZ, BZ, IRQ
BZ, BZ
DATA
DATA
LCD Common Sink Current
LCD Common Source Current
LCD Segment Sink Current
LCD Segment Source Current
Pull-high Resistor
Test Conditions
V
DD
Conditions
¾¾
3V
No load/LCD ON On-chip RC oscillator
5V
3V
No load/LCD ON Crystal oscillator
5V
3V
No load/LCD OFF On-chip RC oscillator
5V
3V
No load/LCD OFF Crystal oscillator
5V
3V
No load Power down mode
5V
3V
DATA, WR,CS,RD
5V 0
3V
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
5V 50 100 150
=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
DATA, WR,CS,RD
Min. Typ. Max. Unit
2.7
¾
155 310
¾
260 420
¾
150 310
¾
250 420
¾
830
¾
20 60
¾ ¾¾ ¾¾
112
¾
224
¾
0
¾ ¾
2.4
¾ ¾
0.9 1.8
1.7 3
-0.9 -1.8 ¾
-1.7 -3 ¾
0.9 1.8
1.7 3
-0.9 -1.8 ¾
-1.7 -3 ¾
80 160
180 360
-40 -80 ¾mA
-90 -180 ¾mA
50 100
120 240
-30 -60 ¾mA
-70 -140 ¾mA
100 200 300
Ta=25°C
5.2 V
mA mA mA mA mA mA
20
mA
35
mA mA mA
0.6 V
1.0 V
3V
5V
mA
¾
mA
¾
mA
mA
mA
¾
mA
¾
mA
mA
¾mA ¾mA
¾mA ¾mA
kW kW
6 April 21, 2000
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