Sharp XE-A21S User Manual

SERVICE MANUAL

MODEL XE-A21S

CONTENTS

CODE : 00Z

LEAD-FREE SOLDER MODEL

XEA21SUSME

ELECTRONIC CASH REGISTER

■ LEAD-FREE SOLDER

CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CHAPTER 2. OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CHAPTER 3. MASTER RESET AND PROGRAM RESET. . . . . . . . . 5

CHAPTER 4. HARDWARE DESCRIPTION . . . . . . . . . . . . . . . . . . . . 6

CHAPTER 5. TEST FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CHAPTER 6. CIRCUIT DIAGRAM AND PWB LAYOUT . . . . . . . . . 15

Parts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

■ LEAD-FREE SOLDER

The PWB’s of this model employs lead-free solder. The “LF” marks indicated on the PWB’s and the Service Manual mean “Lead-Free” solder. The alphabet following the “LF” mark shows the kind of lead-free solder.

Example:

Solder composition

Sn-Ag-Cu

Sn-Ag-Bi Sn-Ag-Bi-Cu

Sn-Zn-Bi

Sn-In-Ag-Bi

Sn-Cu-Ni

Sn-Ag-Sb

Bi-Sn-Ag-P Bi-Sn-Ag

5mm

Lead-Free

Solder composition code (Refer to the table at the right.)

(1) NOTE FOR THE USE OF LEAD-FREE SOLDER THREAD

When repairing a lead-free solder PWB, use lead-free solder thread. Never use conventional lead solder thread, which may cause a breakdown or an accident.

Since the melting point of lead-free solder thread is about 40°C higher than that of conventional lead solder thread, the use of the exclusive-use soldering iron is recommendable.

(2) NOTE FOR SOLDERING WORK

Solder composition code

Since the melting point of lead-free solder is about 220°C, which is about 40°C higher than that of conventional lead solder, and its soldering capacity is inferior to conventional one, it is apt to keep the soldering iron in contact with the PWB for longer time. This may cause land separation or may exceed the heat-resistive temperature of components. Use enough care to separate the soldering iron from the PWB when completion of soldering is confirmed.

Since lead-free solder includes a greater quantity of tin, the iron tip may corrode easily. Turn ON/OFF the soldering iron power frequently.

If different-kind solder remains on the soldering iron tip, it is melted together with lead-free solder. To avoid this, clean the soldering iron tip after completion of soldering work. If the soldering iron tip is discolored black during soldering work, clean and file the tip with steel wool or a fine filer.

XE-A21S LEAD-FRE E SOLDER

CHAPTER 1. SPECIFICATIONS

1. APPEARANCE

Front view Rear view

Operator display

Printer cover

Receipt paper

Keyboard

Drawer

Drawer lock

Printer

Take-up spool

Print roller

arm

Print roller

release lever

Inner cover

Customer display

(Pop-up type)

Power cord

Mode switch

Paper roll cradle

Paper positioning guides

Accessories Manager key 2

Operator key 2

Drawer lock key 2 Drawer lock key

Paper roll 1 Wide 58mm 80φ

Take-up spool 1

USB cable (0GS5422580)

Customer

1 For connection between

ECR and PC

1 disk CD-ROM

support tool

Quick Start Guide 1 copy

USB portSD card slot

Instruction manual

1 copy 2 languages

(English/Spanish)

Specifications and appearance subject to change without notice for improvement.

*1 Use only the USB cable (manufactured by SHARP) supplied with

the XE-A21S for the connection with a PC. In case you need a new USB cable, order the USB cable manufactured by SHARP Co. Ltd. (Part code: 0GS5422580) for use with the XE-A21S.

2. RATING

Model XE-A21S

Dimensions 13.8 (W)

(350 (W)

Weight 17.6 Ib (8 kg)

Power source 120V AC

Powe r consumption

Working

Stand-by 7.7 W

Operating 28 W (max.)

32 °F to 104 °F (0 °C to 40 °C)

temperature

Electronics LSI (CPU) etc.

Display Operator display 7-segment display (10 positions)

Customer display 7-segment display (7 positions)

Printer Type One-station thermal printer

Printing speed Approx. 12 lines/second

Printing capacity 24 digits each for receipt and jour-

Other functions Graphic logo printing function

Paper roll Width : 2.25

Max. diam. : 3.15 in (80 mm) Quality : High quality (0.06 to 0.08 mm thickness)

Cash drawer 4 slots for bill and 5 for coin denominations

× 16.9 (D) × 11.1 (H) in. × 430 (D) × 281 (H) mm)

± 15%, 60 Hz

nal paper

Logo message function

Receipt (ON-OFF) function, compression printing function

± 0.02 in (57.5 ± 0.5 mm)

3. KEYBOARD

1) KEYBOARD LAYOUT

Type Normal keyboard

Key position STD/MAX 53

× 19 (H) mm

PLU

DEPT

/SUB

DEPT SHIFT

CLK

AUTO

TAX

TAX2

TAX1

SHIFT

CHK

MDSE

#/TM

SBTL

CA/AT/NS

Key pitch 19 (W)

Key layout Fixed type

2) KEY LIST

■Keyboard layout

SHIFT

SPACE

FOR

•

789

456

123

CONV

%1RA

RCPT

/PO

NUMBER

–

VOID

RFND

ESC /HELP

Note: The small characters on the bottom or lower right in each key

indicates functions or characters which can be used for character entries for text programming.

XE-A21S SPECIFICATIONS

– 1 –

■Key names

KEY TOP DESCRIPTION

2 Paper feed key

RA Received-on account key

RCPT/PO Receipt print/Paid-out key

VOID Void key

ESC/HELP Escape key/Help key

CONV Conversion key

%1, %2 Percent 1and 2 key

RFND Refund key

- Discount key

@/FOR Multiplication key

• Decimal point key

CL Clear key

0-9,00 Numeric Keys

PLU/SUB PLU/Sub-department key

DEPT# Department code entry key

DEPT SHIFT Department shift key

CLK# Clerk code entry key

Dept1-32 Department keys

TAX Tax k e y

Tax 1 SHIFT Tax 1 shift key

Tax 2 SHIFT Tax 2 shift key

AUTO Automatic sequence key

CHK Check key

CH Charge key

MDSE SBTL Merchandise subtotal key

#/TM/SBTL Non-add code/Time display/Subtotal key

CA/AT/NS Total/Amount tender/No Sale key

VOID : Enters into the void mode. This mode allows correction after

finalizing a transaction.

MGR : For manager’s entries. The manager can use this mode for

an override entry.

X1/Z1 : To take the X/Z report for various daily totals.

X2/Z2 : To take the X/Z report for periodic (weekly or monthly) consol-

idation.

5. DISPLAY

1) OPERATOR DISPLAY

Display device : LED

Number of line : 1 line

Number of positions: 10 positions

Color of display : Yellow Green

Character form : 7 segment

Character size : 14.2 (H)

Layout:

0.1.2.3.4.5.6.7.8.9.

2) CUSTOMER DISPLAY

Display device : LED

Number of line : 1 line

Number of positions: 7 positions

Color of display : Yellow Green

Style : Pop up type

Character form : 7 segment

Character size : 14.2mm (H)

+ DP

× 7.9 (W) mm

+ Dp

× 7.9mm (W)

4. MODE SWITCH

1) LAYOUT

• Rotary type

REG

X/Z

PGM

MGR

1/Z1

X2/Z2

OFF

VOID

The mode switch can be operated by inserting one of the two supplied mode keys - manager (MA) and operator (OP) keys. These keys can be inserted or removed only in the “REG” or “OFF” position.

The mode switch has these settings:

OFF : This mode locks all register operations. (AC power turns off.)

No change occurs to register data.

OP X/Z: To take individual clerk X or Z reports, and to take flash repor ts.

It can be used to toggle receipt state “ON” and “OFF” by pressing he [RCPT/PO] key.

REG : For entering sales.

PGM : To program various items.

Manager key (MA)

Operator key (OP)

OPMA

Layout:

3.4.5.6.7.8.9.

Operator display

PLU/SUB

DEPT REPEAT

RCPT

OFF

Clerk code

NUMBERSHIFT

Amount: Appears in the far-right eight (max.) positions. When the

amount is negative, the minus symbol “-” appears before the amount.

Number of repeats for repetitive registrations:

The number of repeats is displayed, starting at “2” and incremental with each repeat. When you have registered ten times, the display will show “0.” (2 3 3

Receipt function status:

The indicator “_” appears in the RCPT OFF position when the receipt function is in the OFF status.

Time : Appears in the far-right six positions (hour-minute - “ ” or

hour-minute - “ ”) in the OP X/Z, REG, or MGR mode. “ ” is displayed in the morning (AM), and “ ” in the afternoon (PM). In the REG or MGR mode, press the [#/TM/SBTL] key to display the time.

Customer display (Pop-up type)

.....

9 3 0 3 1 3 2

...

)

XE-A21S SPECIFICATIONS

– 2 –

■Machine state symbols

: Appears during programming.

: Appears when an error is detected.

: Appears when the subtotal is displayed or when the amount

tendered is smaller than the sales amount.

: Appears when the [CONV] key is pressed to calculate a subto-

tal in foreign currency.

: Appears when a transaction is finalized by pressing the [CA/AT/

NS], [CHK] or [CH] key.

: Appears when the change due amount is displayed.

: May appear in the far-left three positions at the timing of key

entry when the electronic journal (EJ) memory is full. (Depending on programming.)

: Appears when the voltage of the installed batteries is under the

required level. You must replace with new ones within two days.

: Appears when the batteries are not installed, or the installed

batteries are dead. You must replace with new ones immediately.

: May appear right below the eighth and ninth places at the timing

of finalization of a transaction when the electronic journal (EJ) memory is nearly full. Also appears right below the tenth place when power save mode is effective.

: Appears when the print roller arm is not locked.

: Appears when the paper is not set or has run out.

Segment

Display

position

Amount 1-8

Minus sign 2-10 - : Floating

Error 8-10 Exx : xx

PGM Mode 10 P

CASH, CHECK, CHARGE

SUB TOTAL/ short tender

Change 10 C : Light up whenever the change

Currency Conversion

Department 9-10 No zero-suppressed

PLU 7-10 No zero-suppressed

Repeat 8 Endless count, starting from 2.

Receipt OFF 9 _

DC _ : Double size character entry

SHIFT _ : Shift character entry status

NUMBER _ : Number character entry status

Clerk No. 2, 3 -xx- : clerk number

EJ FULL 8-10 E-E : Light up when EJ memory is

Low Battery 10 L :

No Battery 10 :

10 F : Light up when a registration is

10 o

10 c : Light up whenever the foreign

Description

= error code

finalized by depressing [CASH], [CHECK], [CHARGE] key

due amount appears in the display.

amount appears in the display.

status

FULL at the timing of key entry (by PGM selection).

Decimal Point

Display

position

Decimal point 7-1

TA B 4 -1

EJ near full 8, 9 (by PGM selection)

Description

6. PRINTER

1) Printer

• Part number : M-T53II

• NO. of station : 1 (Receipt or journal)

• Validation : No.

• Printing system : Line thermal

• No. of dot : 288 dots

• Dot pitch : Horizontal 0.167mm Vertical 0.174mm

• Font : 10 dots (W)

• Printing capacity : max. 24 characters

• Character size : 1.67mm (W)

• Print pitch : Column distance 2.0mm Row distance 5.21mm

• Max. Print speed : Approximate 60mm/s (Approximate 12 l/s)

•

Max. Paper feed speed

(Manual feed) : Approximate 40mm/s (Approximate 12 l/s)

• Reliability : Mechanism LIFE 6 million lines used to

• Paper end sensor : Set up

•Cutter : No

• Near end sensor : No

: Approximate 60mm/s (Approximate 12 l/s)

high-quality thermal paper

2) Paper

• Paper roll dimension:

• Paper quality: High-quality thermal paper

57.5 ± 0.5mm in width

Max. 80mm in diameter

paper thickness : 0.06 to 0.08mm

Nihon seisi thermal paper : TF50KS-E

Oji thermal paper : PD150R,

3) Logo stamp

• No

× 24 dots (H)

× 4.17mm (H) at 10 × 24 dots

PD160R

XE-A21S SPECIFICATIONS

– 3 –

4) PRINTING AREA

Number of thermal head heater elements 288 dots

(4.75) (4.75)48 (288 dots)

print area

(max.24 characters)

0.167

57.5±0.5

(Paper dimension)

7. DRAWER

(units : mm)

3) Drawer Lock Key

This key locks and unlocks the drawer. To lock it, turn 90 degrees counterclockwise. To unlock it, turn 90 degrees clockwise.

8. USB PORT

[DEVICE]

USB B Type

[OUTLINE]

This ECR has 1 port. This is used in order to connect with a personal computer.

[OUTLINE]

• Standard equipment : Yes (1)

• Max. number of additional drawers: 1

• The drawer consists of :

1) Drawer box (outer case) and drawer

2) Money case

3) Coin case

4) Lock (attached to the drawer)

[SPECIFICATION]

1) DRAWER BOX AND DRAWER

Model name of the drawer box SJ415

Size

Material Plastic

Bell —

Release lever Standard equipment:

Drawer open sensor —

2)MONEY CASE

Separation from the drawer Disallowed

Separation of the bill compartments from the coin compartments

Bill separator —

Number of compartments 4B/5C

Layout:

330(W) × 418(D) × 98(H)

situated at the bottom

Allowed

[SPECIDICATIONS]

1) Transmission rate

USB 2.0 Full Speed Max. 12Mbps

2) Connector

USB B Type

3) Pin assign

1Pin 5V

2Pin

− D

+ D

3Pin

4Pin GND

9. BATTERY

1) MEMORY BACK UP BATTERY

For memory back up, the dry battery AA (3 pieces) are needed.

1. Memory holding time:

Approximate 1 year after New dry batteries are inserted.

2. Battery exchange method:

When the low battery symbol “L” lights up, batteries (3 pieces) exhange by the following method, with 2 days.

1) Power on the ECR.

2) Mode switch turn to “REG” mode.

3) Release the OLD dry batteries (3 pieces).

4) Insert the NEW dry batteries (3 pieces).

5) Confirm the low battery symbol “L” lights off.

4B/5C

2) LOW BATTERY

Low battery indication will appear on the left side of display when the battery voltage is low.

CASE 1: When any numeric entry & any item entry is not done or just

after finalization.

The machine can indicate the low battery condition. (Always)

XE-A21S SPECIFICATIONS

– 4 –

CASE 2: When numeric entry or item entry is done.

Battery condition will not appear. Exceptionally, when the power is restored after a power failure, the low battery condition will appear on the display only when the battery is low. And the indicator will disappear after any key entry.

[Display sample]

“ 0.00”: Battery is OK.

“L 0.00”: Low battery (You have to change the batteries.)

“ 0.00”: No battery (You have to change the batteries immediately.)

After finalization

“F 12.34”: Battery is OK.

“L 12.34”: Low battery. (“L” indicate instead of “F”.)

“ 12.34”: No battery. (“L” indicate instead of “F”.)

Note: “NO BATTERY”: When the “NO BATTERY” is display, the mas-

ter reset is executed at the timing of “POWER ON” after the “POWER OFF”.

CHAPTER 2. OPTIONS

10. SD MEMORY CARD

[Device]

SD Card (Version. 1.01)

[Outline]

XE-A21S has a SD Memory Card slot.

[Specidications]

1) Variable clock rate : 0 - 25 MHZ

2) Other commands and memory access : 2.7 - 3.6V

3) Bus Protocol : SPI Bus

4) Correspondence capacity : 32MB - 512MB

5) Recommended manufacturer : SanDisk

1. OPTIONS (NO)

2. SERVICE OPTIONS (NO)

3. SUPPLIES

No. NAME PARTS CODE PRICERANK DESCRIPTION

1 Thermal roll paper TPAPR6656RC05 BA 5 ROLLS/PACK (70 φ)

4. SPECIAL SERVICE TOOLS (NO)

No. NAME PARTS CODE PRICERANK DESCRIPTION

1USB Cable

CHAPTER 3. MASTER RESET AND PROGRAM RESET

1. MASTER RESETTING

Master resetting clears the entire memory and resumes initial values. Master resetting can be accomplished by using the following procedure:

Procedure A: 1) Unplug the AC cord from the wall outlet or set the

mode switch to OFF Position.

2) Let the ECR be without the memory back up battery.

3) Wait over 1 muinite for discharging.

4) Set the mode switch to any position except OFF.

5) Plugin the AC cord to the wall outlet or turn the mode switch from OFF Position to another position.

The master reset can also be accomplished in the following case.

In case power failure occurs when the machine has no battery attached to it, the master reset operation is automatically performed after the power has been restored. (This is because if power failure occurs with no battery attached to the machine, all the memories are lost and the machine does not work properly after power recovery; this requires the master reset operation.)

2. PROGRAM RESETTING (INITIALIZATION)

This resetting resumes the initial program without clearing memory.

This resetting can be operated at below sequence in PGM mode.

Procedure: 1) Unplug the AC cord from the wall outlet.

2) Wait over 1 muinite for discharging.

3) Set the mode switch to the PGM position.

4) While holding down the FEED key, plugin the AC cord to the wall outlet.

Note: In case power failure occurs when the machine has no battery

attached to it, the master reset operation is automatically performed after the power has been restored.

XE-A21S OPTION S

– 5 –

CHAPTER 4. HARDWARE DESCRIPTION

1. HARDWARE BLOCK DIAGRAM

12MHz

PRINTER

MT53II

DRY Battery

CPU

Renesus

M30624MWPXXXFP

ROM 320KByte RAM 24KByte

Decoder

74HC138

4 to 16

74H374

BUZZER

RESET IC

LV125

HCT04

S-RAM

128KByte

USB Controller

M66291GP

SEG

Driver

DIG

Driver

KEY SCAN

KEY RETURN

POWER

5.8V

5.0V

3.3V

7.9V

23.8V

32.768kHz

DRAWER

Driver/Sensor

MOTOR

SD CARD

USB

Type B

LED Front 10 PopUp 7

KEY

SWITCH

2. MEMORY MAP

1MByte mode/The CS area PM13 = 1 is selected.

CPU internal RAM : 24KByte 00400h-063FFh

External RAM : 128KByte 08000h-27000h

00000h

00400h

CPU internal RAM

24KByte 00400h-063FFh

063FFh

06400h

08000h External RAM

128KByte

27000h

28000h USB controller

(Area that can be used 124KByte)

/CS2

/CS1

CPU : M30624MWP-XXXFP (Renesus)

ROM 320KByte (MASK) RAM 24KByte

External RAM : 1Mbit (128K

CYPRESS CY62128BLL-70SXI

Printer : MT53II (EPSON)

USB controller : M66291GP (Renesus)

× 8)

30000h Segment Latch Address

80000h

B0000h

CPU internal MASK ROM

320KByte B0000h-FFFFFh

FFFFFh

/CS0

XE-A21S HARDWARE DESCRIPTION

– 6 –

3. CPU PORT

Port Pin No. Pin name Signal name I/O Initial value Off mode Function

P00 88 D0 D0 I/O H Out L DATE BUS D0

P01 87 D1 D1 I/O H Out L DATE BUS D1

P02 86 D2 D2 I/O H Out L DATE BUS D2

P03 85 D3 D3 I/O H Out L DATE BUS D3

P04 84 D4 D4 I/O H Out L DATE BUS D4

P05 83 D5 D5 I/O H Out L DATE BUS D5

P06 82 D6 D6 I/O H Out L DATE BUS D6

P07 81 D7 D7 I/O H Out L DATE BUS D7

P10 80 P10 KST0 O L In KEY DISPLAY (4 TO 16)

P11 79 P11 KST1 O L In KEY DISPLAY (4 TO 16)

P12 78 P12 KST2 O L In KEY DISPLAY (4 TO 16)

P13 77 P13 KST3 O L In KEY DISPLAY (4 TO 16)

P14 76 P14 IN2 O L Out L PAPER FEED MOTOR

P15 75 P15 IN1 O L Out L PAPER FEED MOTOR

P16 74 P16 ENA2 O L Out L PAPER FEED MOTOR

P17 73 P17 ENA1 O L Out L PAPER FEED MOTOR

P20 72 A0 A0 O H Out L ADDRESS BUS A0

P21 71 A1 A1 O H Out L ADDRESS BUS A1

P22 70 A2 A2 O H Out L ADDRESS BUS A2

P23 69 A3 A3 O H Out L ADDRESS BUS A3

P24 68 A4 A4 O H Out L ADDRESS BUS A4

P25 67 A5 A5 O H Out L ADDRESS BUS A5

P26 66 A6 A6 O H Out L ADDRESS BUS A6

P27 65 A7 A7 O H Out L ADDRESS BUS A7

P30 63 A8 A8 O H Out L ADDRESS BUS A8

P31 61 A9 A9 O H Out L ADDRESS BUS A9

P32 60 A10 A10 O H Out L ADDRESS BUS A10

P33 59 A11 A11 O H Out L ADDRESS BUS A11

P34 58 A12 A12 O H Out L ADDRESS BUS A12

P35 57 A13 A13 O H Out L ADDRESS BUS A13

P36 56 A14 A14 O H Out L ADDRESS BUS A14

P37 55 A15 A15 O H Out L ADDRESS BUS A15

P40 54 A16 A16 O H Out L ADDRESS BUS A16

P41 53 A17 A17 O H Out L ADDRESS BUS A17

P42 52 A18 A18 O H Out L ADDRESS BUS A18

P43 51 A19 A19 O H Out L ADDRESS BUS A19

P44 50 /CS0 /CS0 O H Out L SEGMENT LATCH

P45 49 /CS1 /CS1 O H Out L USB CONTROLLER

P46 48 /CS2 /CS2 O H Out H SRAM

P47 47 /CS3 (NU) O L Out L UNUSED

P50 46 /WR /WR O H Out L WRITE STROBE SIGNAL

P51 45 /BHE (NU) O L Out L UNUSED

P52 44 /RD /RD O H Out L READ STROBE SIGNAL

P53 43 BCLK (NU) O L Out L UNUSED

P54 42 /HLDA (NU) O L Out L UNUSED

P55 41 /HOLD /EPM I

P56 40 ALE (NU) O L Out L UNUSED

P57 39 /RDY /RDY I

P60 38 P60 DR1 O L Out L DRAWER DRIVE SIGNAL

P61 37 P61 SD_CLK O H Out L SD CLK

P62 36 P62 SD_RXD I

P63 35 P63 SD_TXD O H Out L SD TXD

In VCC PULLUP

In SD RXD

XE-A21S HARDWARE DESCRIPTION

– 7 –

Port Pin No. Pin name Signal name I/O Initial value Off mode Function

P64 34 P64 SD_POWER# O H Out L SD POWER#

P65 33 P65 SD_CS# O H Out L SD CS#

P66 32 P66 SD_CD# I

P67 31 P67 SD_WP# I

In SD CD#

In SD WP#

P70 30 TXD2 DAT O L Out L PRINTER DATA OUT

P71 29 P71 (NU) O L Out L UNUSED

P72 28 CLK2 CLK O L Out L PRINTER CLOCK

P73 27 P73 (NU) O L Out L UNUSED

P74 26 P74 P74 I

P75 25 P75 P75 I

In MODEL JUDGMENT

P76 24 P76 /RES_USB O L Out L USB RESET

P77 23 P77 /EPM CTRL O H Out L /EPM CONTROL SIGNAL WHEN IPL

P80 22 P80 BUZZER O L Out L BUZZER

P81 21 P81 MOTOR O L Out L PAPER TAKE UP MOTOR

P82 20 /INT0 POFF I

P83 19 /INT1 /DREQUSB I

P84 18 /INT2 /INTUSB I

P85 17 /NMI (NU) I

P86 11 XCOUT XCOUT I

P87 10 XCIN XCIN I

P90 7 P90 P90 I

P91 6 P91 P91 I

P92 5 P92 P92 I

P93 4 P93 P93 I

P94 3 P94 P94 I

P95 2 P95 P95 I

P96 1 P96 P96 I

P97 100 P97 P97 I

P100 97 AN0 P100 I

P101 95 AN1 P101 I

In POWER INTERRUPT

In USB DMA REQUEST

In USB INTERRUPT

In UNUSED

In 32.768kHz

In KEY IN

In HEAD TEMPERATURE MONITOR

In HEAD VOLTAGE MONITOR

P102 94 P102 /STB2 O H In PRINTER/STB2

P103 93 AN3 VBAT I

In BATTERY VOLTAGE

P104 92 P104 (NU) O L Out L UNUSED

P105 91 P105 VPON O L Out L PRINTER HEAD POWER

P106 90 P106 /LAT O H Out L PRINTER DATA LATCH

P107 89 P107 /STB1 O H In PRINTER/STB1

BYTE 8 BYTE I

CNVss 9 CNVss I

/RESET 12 /RESET I

In CONNECTED TO VDD

In NOMAL: L /BOOT: H

In RESET

Xout 13 Xout O Out CLOCK

Vss 14 Vss power CONNECTED TO GND

Xin 15 Xin I In CLOCK

Vcc 16 Vcc power CONNECTED TO VDD

Vcc 62 Vcc power CONNECTED TO VDD

Vss 64 Vss power CONNECTED TO GND

AVss 96 AVss power CONNECTED TO GND

Vref 98 Vref ref CONNECTED TO VDD

AVcc 99 AVcc power CONNECTED TO VDD

XE-A21S HARDWARE DESCRIPTION

– 8 –

4. USB PORT

One port for USB Port (Slave) is provided as a standard provision of XE-A21S. The Renesus-make USB general-use ASSP device M66291 is used. The M66291 is mapped to the /CS1 area 28000h-29FFFh.

CPU

A1-A6

D0-D7

/CS1

/RD

/WR

/RESUSB

/DREQUSB

/INTUSB

M66291

D15/AD0 AD1-AD6

VBuss

D0-D7 TrON

CS RD LWR /RESET /Dreq0 /INT0 HWR/BYTE

D D

24MHz

1.5k

−

1.0µF

Vbus

GND

USB CONNECTOR

−

No. CPU port Use signal Purpose

19 P83 (INT1)

18 P84 (INT2) /INTUSB USB interruption 0 request signal

P76 (TA3OUT)

/DREQUSB

USB DMA channel 0 DMA request signal

/RESUSB M66291 Reset control

5. SD CARD I/F

One port for SD card I/F is provided as a standard provision of XE-A21S. Communication with the SD card is made in the SPI mode.

Driver IC input (CPU output) Motor drive signal

STEP IN1 IN2 ENA1 ENA2

(OUT1)B (OUT3)

(OUT2)

(OUT4)

1LLHH H H L L

2HLHH L H H L

3HHHH L L H H

4LHHH H L L H

6-2. HEAD CONTROL

HEAD: All 288dot, Width 0.167mm/dot (6dot/mm)

Pin No. CPU port Use signal Function

89 P107 STRB1# Printer STB1#

94 P102 STRB2# Printer STB2#

30 P70 DAT Printer print data

28 P72 PCLK Printer forwarding clock

90 P106 LATCH# Printer data latch

91 P105 VPON Printer head motor power

6-3. PAPER TAKE UP MOTOR CONTROL

Pin No. Port Use signal Function

21 P81 MOTOR Printer paper take up motor

6-4. OUT OF PAPER DETECTION

Pin No. Port Strobe signal Function

6 P91 /S4 Printer out of paper detection

(It reads according to the timing of /S4)

No. CPU port Use signal Purpose

31 P67 (TXD1) /SD_WP SD card write protect detection signal

32 P66 (RXD1) /SD_CD SD card insertion detection signal

33 P65 (CLK1) /SD_CS SD card chip select signal

34 P64 (CLKS1) /SD_POW SD card power on signal

35 P63 (TXD0) SD_TXD TxD signal

36 P62 (RXD0) SD_RXD RxD signal

37 P61 (CLK0) SD_CLK Serial CLK signal

6. PRINTER CONTROL

6-1. STEPPING MOTOR CONTROL

The two-phase bi-polar stepping motor is driven at a constant voltage. 1step: 0.087mm, 1dot: 2step

Pin No. CPU port Use signal Function

76 P14 IN2 Paper feed motor (IN2)

75 P15 IN1 Paper feed motor (IN1)

74 P16 ENA2 Paper feed motor (ENA2)

73 P17 ENA1 Paper feed motor (ENA1)

6-5. PLATEN OPEN (HEAD UP DETECTION)

Pin No. Port Strobe signal Function

6 P91 /S3 Platen open detection

(It reads according to the timing of /S3)

7. A/D CONVERSION

The following three signals are inputted to the A/D conversion port.

PIN No.

Port

97 AN0/P100 TM Printer head temperature monitor

95 AN1/P101 VPTEST Printer head voltage monitor

93 AN3/P103 VBAT Battery voltage monitor

Use

signal

Function

XE-A21S HARDWARE DESCRIPTION

– 9 –

+ 25 hidden pages

Sharp XE-A21S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

■ LEAD-FREE SOLDER

CHAPTER 1. SPECIFICATIONS

1. APPEARANCE

2. RATING

3. KEYBOARD

5. DISPLAY

4. MODE SWITCH

6. PRINTER

7. DRAWER

8. USB PORT

9. BATTERY

CHAPTER 2. OPTIONS

1. OPTIONS (NO)

2. SERVICE OPTIONS (NO)

3. SUPPLIES

4. SPECIAL SERVICE TOOLS (NO)

CHAPTER 3. MASTER RESET AND PROGRAM RESET

1. MASTER RESETTING

2. PROGRAM RESETTING (INITIALIZATION)

CHAPTER 4. HARDWARE DESCRIPTION

1. HARDWARE BLOCK DIAGRAM

2. MEMORY MAP

3. CPU PORT

4. USB PORT

5. SD CARD I/F

6. PRINTER CONTROL

7. A/D CONVERSION