Datasheet LC19001A010 Datasheet (SANYO)

Overview

The LC19001A010 provides rapid and precise position
detection for the resistive membrane pressure-sensitive
digitizers used in PDAs and other portable information­processing equipment. It implements, in a single chip, the
coordinate readout processing required for pen input
operations.

This controller provides the following functions: digitizer
voltage A/D conversion, noise exclusion, conversion to
display coordinates, and data transfer to the host CPU.

Features

• Detects input coordinate values from resistive membrane
pressure-sensitive digitizers at readout speeds up to 190
points per second using a 10-bit A/D converter.

• Compact size, low power, and the 3.3 V power supply
operation appropriate for PDAs and other portable
information-processing equipment

• Menu area registration, duplicate coordinate processing,
and 4-byte packets reduce the host CPU processing load.

• Logical exclusion of abnormal coordinates and averaging
processing to remove both pen chattering noise and
noise from the LCD system

• Controller functions can be programmed by sending
command data from the host CPU.

Package Dimensions

unit: mm

3326-LQFP80

CMOS LSI

Ordering number : EN*5560B

O3096HA (OT) No. 5560-1/8

Preliminary

SANYO: LQFP80

[LC19001A010]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

Digitizer Controller

LC19001A010

Pin Assignment

Block Diagram

No. 5560-2/8

LC19001A010

No. 5560-3/8

LC19001A010

Pin No. Pin I/O Function

1 UI In RS-232C receive data input (CMOS level)
2 UO Out RS-232C send data output (CMOS level)
3 NC Out
4 NC Out
5 NC Out
6 NC Out
7 NC Out
8 NC Out

9 MOD0 In GND
10 MOD1 In GND
11 X0 Clock oscillator connection
12 X1 Clock oscillator connection
13 V

SS

GND
14 RSTX In Reset input (active low)
15 NC Out
16 NC Out
17 NC Out
18 NC Out
19 NC Out
20 NC Out
21 NC Out
22 NC Out
23 OUTPDWN Out Pen down switch output port
24 NC In
25 NC In
26 NC In
27 OUTY0 Out Digitizer electrode switching output: Y (Y0)
28 OUTY1 Out Digitizer electrode switching output: Y (Y1)
29 OUTX0 Out Digitizer electrode switching output: X (X0)
30 OUTX1 Out Digitizer electrode switching output: X (X1)
31 NC In
32 CHK1 Out Internal state verification output port 1
33 NC In
34 CHK2 Out Internal state verification output port 2
35 NC In
36 CHK3 Out Internal state verification output port 3
37 NC In
38 PDWIN In Pen down level detection
39 T1 In Communication format setting input port 1
40 T2 In Communication format setting input port 2
41 T3 In Communication format setting input port 3
42 T4 In Communication format setting input port 4

Pin Functions

Continued on next page

No. 5560-4/8

LC19001A010

Continued from preceding page

Pin No. Pin I/O Function

43 BR1 In Baud rate setting input port 1
44 BR2 In Baud rate setting input port 2
45 BR3 In Baud rate setting input port 3
46 CK In Operating frequency setting input port (See the external switch settings)
47 NC In
48 NC In
49 NC In
50 NC In
51 NC In
52 CHK4 Out Internal state verification output port 4. (High in sleep or stop modes)
53 V

CC

Power supply
54 CHK5 Out Internal state verification output port 5
55 RST_S Out Reset notification signal
56 V

SS

GND
57 NC Out
58 NC Out
59 NC In
60 NC In
61 NC In
62 INT_PDW In Pen down interrupt (level)
63 INT_S In Stop mode clear interrupt (Connect with UI)
64 NC In
65 NC In
66 NC In
67 NC In GND
68 NC In GND
69 NC In GND
70 NC In GND
71 INY1 In Digitizer analog input: Y (Y1)
72 INY0 In Digitizer analog input: Y (Y0)
73 INX1 In Digitizer analog input: X (X1)
74 INX0 In Digitizer analog input: X (X0)
75 AV

CC

Analog system power supply (A/D converter power supply)
76 AVR In A/D converter reference voltage input
77 AV

SS

Analog system ground (A/D converter ground)
78 NC In
79 NC Out
80 NC Out

No. 5560-5/8

LC19001A010

Parameter Symbol Conditions

Rated value

Unit

min max

Supply voltage

V

CC

VSS– 0.3 VSS+ 7.0 V

AV

CC

Must not exceed VCC. *1 VSS– 0.3 VCC+ 0.3 V

A/D converter reference input voltage AVR Must not exceed AV

CC

+ 0.3 V. VSS– 0.3 VCC+ 0.3 V

Input voltage V

I

*2 VSS– 0.3 VCC+ 0.3 V

Output voltage V

O

1 *2 VSS– 0.3 VCC+ 0.3 V

Maximum low-level output current I

OL

20 mA

Average low-level output current I

OLAV

The average value of (operating current × operating ratio) 4 mA

Maximum total low-level output current ∑I

OL

100 mA

Average total low-level output current ∑I

OLAV

The average value of (operating current × operating ratio) 40 mA

Maximum high-level output current I

OH

–20 mA

Average high-level output current I

OHAV

The average value of (operating current × operating ratio) –4 mA

Maximum total high-level output current ∑I

OH

–50 mA

Average total high-level output current ∑I

OHAV

The average value of (operating current × operating ratio) –20 mA
Power dissipation Pd 300 mW
Operating temperature Ta –40 +85 °C
Storage temperature Tstg –55 +150 °C

Specifications

Absolute Maximum Ratings

Note: 1. The LC19001A010 must be used with AVCCand VCCat the same potential.

Also, applications must assure that AV

CC

does not exceed VCCat power on.

2. V

I

and VO1 must not exceed VCC+ 0.3 V.

<Notes> This LSI can be permanently damaged by use at stresses in excess of the absolute maximum ratings.

It is desirable that the LC19001A010 be operated within the recommended operating conditions during normal operation. In particular, the LSI’s
reliability may be adversely affected if these conditions are exceeded.

Note: The guaranteed analog ranges vary with the frequency used.

Parameter Symbol Conditions

Rated value

Unit

min max

Supply voltage V

CC

Guaranteed range for normal operation* 2.2* 6.0* V

RAM state retention in stop mode 1.5 6.0 V
A/D converter reference input voltage AVR 0.0 AV

CC

V

Operating temperature Ta –40 +85 °C

Recommended Conditions at AVSS= VSS= 0 V

Parameter Symbol Pins Conditions

Ratings

Unit

Operating

min typ max

frequency

I

CC

1

Normal

VCC= 5.0 V 12 20 mA 10 MHz

I

CC

2 VCC= 3.3 V 12 mA 8 MHz

I

CCS

1 V

CC

Sleep mode

VCC= 5.0 V 3 7 mA 10 MHz

Current drain I

CCS

2 VCC= 3.3 V 1 1.5 mA 8 MHz

I

CCH

Stop mode Ta = 25°C 1 µA 8 MHz

IA

AV

CC

A/D converter active 4 mA 8 MHz

IAH A/D converter stopped Ta = 25°C 1 µA 10 MHz

Input capacitance Cin

Pins other than AV

CC

,

f = 1 MHz 10 pF

AV

SS

, VCCand V

SS

DC Standards at Ta = –40 to 85°C

Digitizer Controller Provisional Specifications *Initial values

No. 5560-6/8

LC19001A010

Parameter Function Description

Coordinate calculation method Source data mode A/D converted data is sent to the host CPU.

(Normalized data mode)* Normalized data is sent to the host CPU.
Interface Serial communications Asynchronous serial communications
Communication rates (transfer rates) 1200, 2400, 4800, External switches are used to set the initial communication rate. See the “External

9600, 19200 (bps) Switch Settings” charts. However, the LC19001A010 does not support 19200-bps

communication at 8 MHz. The rate can be changed by command.

Communication format Data length: 8 bits External switches are used to set the initial communication format. See the

Parity: none, even, odd “External Switch Settings” charts.

Stop bits: 1 or 2
Output rate (sampling rate) Can be set to an arbitrary 10 MHz: Maximum normalized data rate: 150 p/s

value. Maximum source data rate: 190 p/s

Initial value (When the baud rate is 19200)

10 MHz: 100 P/S 8 MHz: Maximum normalized data rate: 120 p/s

8 MHz: 80 P/S Maximum source data rate: 150 p/s

(When the baud rate is 9600)

Note: The above values apply when no menu area is registered.
Coordinate data format 4-byte binary See the “Coordinate Data Format” charts.
Data output mode Point When the pen is down, coordinate values are output one point at a time.

(Stream)* While the pen remains down, coordinate values are output continuously.

Power dissipation (chip)

Low power functions • Events that recover from

sleep mode:
Pen down, reset, command
reception

• Events that recover from
stop mode:
Pen down, reset, stop clear
command

Methods for switching modes: There are two types of command that are used to switch to the low power modes

as follows:

Direct Direct: The LC19001A010 switches to the low power mode after the command is

accepted.

Auto Auto: After the last coordinate input, if there is no input for a preset time, the

LC19001A010 switches to the low power mode.

Transition times • Transition from normal mode to low power mode: about 5 µs

• Transition from low power mode to normal mode:
Sleep mode: about 5 µs
Stop mode: The oscillator stabilization period plus 5 µs

Drive voltage 3.3 to 6 V An 8 MHz clock frequency must be used when the drive voltage is 3.3 V.
Clock frequency 8 MHz, 10 MHz
Package LQFP80 (SQFP80)
Chip size (mm) 14 × 14 × 1.5
A/D converter resolution 10-bit Linearity error: ±2 LSB (5 V, 10 MHz operation)

Linearity error: ±2 LSB (3.3 V, 8 MHz operation)

5-V drive 140 mW (MAX) At a 10-MHz operating frequency, with the pen down

3.3-V drive 52.8 mW (MAX) At an 8-MHz operating frequency, with the pen down

Chip power dissipation Sleep mode Stop mode Operating frequency

5-V drive 35 mW (MAX) 5 µW (MAX) 10 MHz

3.3-V drive 4.95 mW (MAX) 3.3 µW (MAX) 8 MHz
Sleep: CPU operation is stopped, but all other circuits operate.
Stop: The oscillator circuit is stopped.

Continued on next page.

No. 5560-7/8

LC19001A010

Continued from preceding page.

Parameter Function Description

Reset Hardware reset There are four types of reset: hardware reset, software reset, power on reset, and

Software reset watchdog reset.
Power on reset Operation starts after the oscillator stabilization period has elapsed when stop

mode is cleared and after a power on reset.

Watchdog reset A reset function operates automatically if the application software fails.

Status diagnostic function Control setting state Sends the controller’s current state of the settings to the host CPU.

verification Information sent includes the coordinate calculation method, the data output

mode, and the output rate.

Interface diagnostic function Interface verification Uses arbitrary data to verify whether communication between the controller and

the host CPU is functioning normally.

Menu area function Menu area registration A menu area can be registered at an arbitrary location.

Up to 24 menu items can be registered.

Reference value setup function Matching positions Accepts A/D values and reference coordinate values from the host CPU for use in

normalizing the A/D converted data and in matching positions.

Duplicate coordinate processing Duplicate coordinates are not Compares the coordinate values transferred in the previous operation with the
function transmitted current coordinate data and if the coordinate values are the same (i.e., if they are

duplicate coordinate values) the LC19001A010 does not send the current
coordinate data. (Only valid in stream mode)

Timeout function Sets the timeout time If the required data was not received within the preset timeout time, the controller

sends F3h to the host CPU.

Noise exclusion function Sets the parameters used to Normally set to be about 10% of the number of pixels. (only valid in normalized

reduce noise levels mode)

Initial values: X = 64, Y = 48

Lock function Starts and clears the lock If a lock command is issued, after transmitting the coordinate data currently being

function transmitted, the controller halts transmission.

The lock state is cleared by sending a lock clear command.

Coordinate Data Output Format: 4-byte structure

Ph 0 0 P X3 X2 X1 X0

0 0 X9 X8 X7 X6 X5 X4
0 0 0 0 Y3 Y2 Y1 Y0
0 0 Y9 Y8 Y7 Y6 Y5 Y4

bit 7 6 5 4 3 2 1 0

First byte
Second byte
Third byte
Fourth byte

• Ph: Phase bit, always set to 1.

• 0: Zero bits, always cleared to 0.

• X0 to X9: Horizontal axis value (X) as a binary value (X9 is the high-order bit)

• Y0 to Y9: Vertical axis value (Y) as a binary value (Y9 is the high-order bit)

• P: Pen status (pen down = 1, pen up = 0)

– When the pen is in the up state, the LC19001A010 sends a single byte with the value 80 h.

Menu Area Number Output Format: 1-byte structure

Ph 1 0 M4 M3 M2 M1 M0

bit 7 6 5 4 3 2 1 0

First byte

• Ph: Phase bit, always set to 1.

• 1: One bit, always set to 1.

• 0: Zero bit, always cleared to 0.

• M0 to M4: Menu number M (range: 1 to 24) as a binary value (M4 is the high-order bit)

– When the pen is in the up state, the LC19001A010 sends a single byte with the value 80 h.

Note : Coordinate data and menu area data can be differentiated by inspecting bit 6. (See the data format descriptions above.)

No. 5560-8/8

LC19001A010

This catalog provides information as of October, 1996. Specifications and information herein are subject to
change without notice.

■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.

■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:

➀

Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:

➁

Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.

■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.

External Switch Settings

Pin No. 46

Frequency (MHz) CK

10 L
8* H

Operating frequency

Pin No. 43 44 45

Mode Baud rate (bps) BR1 BR2 BR3

0 1200 L L L
1 2400 H L L
2 4800 L H L
3 9600 L L H
4 19200 H H H

Communication speed
(transfer rate)

Pin No. 39 40 41 42

Data length Parity Stop bits T1 T2 T3 T4

None

1 L L L H
2 L L L L

8 bits Even

1 L H L L

Present

2 L H L H

Odd

1 L H H L
2 L H H H

Communication
format

Note: Can not be used at 19200 bps.