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PDF HT1660 Data sheet ( Hoja de datos )
| Número de pieza | HT1660 | |
| Descripción | 96x32 LCD Controller | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HT1660 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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www.DataSheet.co.kr
HT1660
96´32 LCD Controller for I/O MCU
PATENTED
PAT No. : 099352
Technical Document
· Tools Information
· FAQs
· Application Note
Features
· Operating voltage: 2.7V~5.2V
· Built-in 32kHz RC oscillator
· External 32.768kHz crystal oscillator or 32kHz fre-
quency source input
· Standby current: <1mA at 3V, <2mA at 5V
· Internal resistor type: 1/6 bias or 1/5 bias, 1/32 duty,
or 1/16 duty
· Three selectable LCD frame frequencies: 64Hz,
89Hz or 170Hz
· Max. 96´32 patterns, 96 segments and 32 commons
· 112 segments and 16 commons selectable by com-
mand method
· Built-in bit-map display RAM: 3072 bits (=96´32 bits)
· Built-in internal resistor type bias generator
· Six-wire interface (four data wires)
· Eight kinds of time base/WDT selection
· Time base or WDT overflow output
· R/W address auto increment
· Built-in buzzer driver (2kHz/4kHz)
· Power down command reduces power consumption
· Software configuration feature
· Data mode and Command mode instructions
· Three data accessing modes
· Provides VLCD pin to adjust LCD operating voltage
and max. VLCD voltage up to 7V
· Provides three kinds of bias current programming
· Control of TN-type and STN-type LCDs
· 208-pin QFP package
Applications
· Leisure products
· Games
· Personal digital assistant
· Cellular phone
· Global positioning system
· Consumer electronics
General Description
HT1660 is a peripheral device specially designed for I/O
type MCU used to expand the display capability. The
max. display segment of the device are 3072 patterns
(96 segments and 32 commons). It also supports four
data bits interface, buzzer sound, Watchdog Timer or
time base timer functions. The HT1660 is a memory
mapping and multi-function LCD controller. Since the
HT1660 can control TN-type (Twisted Nematic) or
STN-type (Super Twisted Nematic) LCDs. The software
configuration feature of the HT1660 make it suitable for
multiple LCD applications including LCD modules and
display subsystems. Only six lines (CS, WR, DB0~DB3)
are required for the interface between the host controller
and the HT1660.
Rev. 1.70
1 November 9, 2010
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
PATENTED
HT1660
Pad Description
Pad No.
Pad Name
1~33
87~149
SEG63~SEG95
SEG0~SEG62
34~49
71~86
COM31~COM16
COM0~COM15
50 CS
51 RD
52
53~56
57
WR
DB0~DB3
VSS
58 OSCI
59 OSCO
60
61
62
63, 64
65~69
VDD
VLCD
IRQ
BZ, BZ
T1~T4, T000
I/O Description
O LCD segment outputs
LCD common outputs, under 112´16 command mode, COM16~COM31 will
O share to SEG96~SEG111. COM31/SEG96, COM30/SEG97, COM29/
SEG98....., COM18/SEG109, COM17/SEG110, COM16/SEG111
Chip selection input with pull-high resistor. When the CS is logic high, the
data and command read from or write to the HT1660 are disabled. The serial
I interface circuit is also reset. But if the CS is at a logic low level and is input to
the CS pad, the data and command transmission between the host controller
and the HT1660 are all enabled.
READ clock input with pull-high resistor. Data in the RAM of the HT1660 are
I
clocked out on the falling edge of the RD signal. The clocked out data will ap-
pear on the data line. The host controller can use the next rising edge to latch
the clocked out data.
I
WRITE clock input with pull-high resistor. Data on the DATA line are latched
into the HT1660 on the rising edge of the WR signal.
I/O Parallel data input/output with a pull-high resistor
¾ Negative power supply for logic circuit, ground
The OSCI and OSCO pads are connected to a 32.768kHz crystal in order to
I
O
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 selected, the OSCI and OSCO pads can be left
open.
¾ Positive power supply for logic circuit
I Power supply for LCD driver circuit
O Time base or Watchdog Timer overflow flag, NMOS open drain output.
O 2kHz or 4kHz frequency output pair (tristate output buffer)
I
Vary bias current pin
It is usually not connected
Absolute Maximum Ratings
Supply Voltage ...........................VSS-0.3V to VSS+5.5V
Input Voltage.............................VSS-0.3V to VDD+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-25°C to 75°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum 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 exposure to extreme conditions may affect device reliability.
Rev. 1.70
5 November 9, 2010
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
PATENTED
HT1660
Buzzer Tone Output
A simple tone generator is implemented in the HT1660.
The tone generator can output a pair of differential driv-
ing signals on the BZ and BZ which are used to generate
a single tone.
By executing the TONE 4K and TONE 2K commands
there are two tone frequency outputs selectable that can
turn on the tone output. The TONE 4K and TONE 2K
commands set the tone frequency to 4kHz and 2kHz, re-
spectively. The tone output can be turned off by invoking
the TONE OFF command. The tone outputs, namely BZ
and BZ, are a pair of differential driving outputs used to
drive a piezo buzzer. Once the system is disabled or the
tone output is inhibited, the BZ and the BZ outputs will
remain at low level.
Command Format
The HT1660 can be configured by software setting.
There are two mode commands to configure the
HT1660 resource and to transfer the LCD display data.
The configuration mode of the HT1660 is called com-
mand mode, and its command mode ID is 100. The
command mode consists of a system configuration
command, a system frequency selection command, an
LCD configuration command, a tone frequency selec-
tion command, a bias current selection command, a
timer/WDT setting command, and an operating com-
mand. The data mode, on the other hand, includes
READ, WRITE, and READ-MODIFY-WRITE opera-
tions.
The following are the data mode ID and the command
mode ID:
Operation
Mode
ID
READ
Data
110
WRITE
Data
101
READ-MODIFY-WRITE
Data
101
COMMAND
Command
100
If successive commands have been issued, the com-
mand mode ID can be omitted. While the system is op-
erating in the non-successive command or the
non-successive address data mode, the CS pin should
be set to ²1² and the previous operation mode will also
be reset. The CS pin returns to ²0², so a new operation
mode ID should be issued first.
C lo c k S o u r c e
T im e B a s e
¸256
T IM E R E N /D IS
V D D W D T E N /D IS
C L R T im e r
D
W DT
Q
¸4 C K
R
IR Q E N /D IS
C LR W D T
Time Base and WDT Configurations
IR Q
Name
Command Code
Function
TONE OFF
TONE 4K
TONE 2K
X100-0000-1000-XXXX
X100-0001-0000-XXXX
X100-0001-0001-XXXX
Turn-off tone output
Turn-on tone output, tone frequency is 4kHz
Turn-on tone output, tone frequency is 2kHz
Buzzer Tone Output Command Code
The following are the data mode ID and the command ID:
Operation
READ
WRITE
READ-MODIFY-WRITE
COMMAND
Mode
Data
Data
Data
Command
ID
110
101
101
100
If successive commands have been issued, the command mode ID can be omitted. While the system is operating in the
non-successive address data mode, the CS pin should be set 1 and the previous operation mode will also be reset. The
CS pin returns to 0, so a new operation mode ID should be issued first.
Rev. 1.70
11 November 9, 2010
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet HT1660.PDF ] | |
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