DS3231 or DS3232 OR ISL1220 OR PCF8563 REAL TIME ... - vk3pe

Mar 25, 2011 - DS3231 or DS3232 OR ISL1220 OR PCF8563 REAL TIME CLOCK FOR Trxavr / TftA. 5V. SCL. SDA. 12345. P5. 5 WAY SOCKET STRIP 0.1".
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DS3231 or DS3232 OR ISL1220 OR PCF8563

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REAL TIME CLOCK FOR Trxavr / TftA

This version caters for most RTC chips but uses a DS Plated through PCB NOTE: RTC-8564 IC cannot be used.

25-03-11

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This PCB mounts on the back of the TFT PCB,

ensure you have space to mount it.

For other displays, you will need to chassis mount the PCB, see drawing. Socket, Connects to Tft pcb

J1 HEADER SOCKET 3 PIN

PCB SHAPE

3 2 1

R3

5V

5v from Tft 0R out if U2 is used. J1A

C4 100nF

12V

3 2 1

MOUNTING HOLE PROVISION

C1 1uF ceramic

U2 78L05 (TO92) 1

HEADER 3 PIN

IN

MOUNTING HOLE PROVISION

NET NAMES CONNECT TO REST OF SCHEMATIC.

2

U1A DS3232

not used SCL SDA VBAT

R4

R5

10k *

10k *

R1 10K U1 DS3231

OUT SQWV

DS3232S

res*

[ IIC ADDR = $68]

1 2 3 4 5 6 7 8

32Khz OUT SCL Vcc SDA INT/SQWV Vbat RST GND XTAL NC NC IN-BUILT NC NC NC NC NC NC DS3231s

[ IIC ADDR = $68]

16 15 14 13 12 11 10 9

SCL GND SCL

C2

1 2 3 4

C6 1uF ceramic

X1 X2 Vbat GND NC

Vdd IRQ SCL SDA Fout

10 9 8 7 6

B

Via existing cable

4 WAY HEADER 0.1"

SCL SDA freq

ISL1220

CONNECTS TO Trxavr PCB

5V

X2

1 2 3 4 5

CONNECTS TO Tft PCB

P6_3

5V

IC1

1 2 3 4

4 WAY SOCKET STRIP 0.1"

BAT1 CR2032

VBAT X1 32.768KHz

P6

SDA

VBAT

XTAL B

R2 10K

1

20 19 18 17 16 15 14 13 12 11

nc SCL nc nc 32Khz OUT SCL Vcc SDA INT/SQWV Vbat RST XTAL GND NC IN-BUILT NC NC NC NC NC NC NC

SOT89 5V REG FARNELL 1366573 OR 1236590, 9593870 ?

5V

2

1 2 3 4 5 6 7 8 9 10

C

SOT89

1uF ceramic

OUT 5V SQWV res*

5V

CAN CUT OFF THIS SECTION IF CHASSIS MOUNTED

U2A 78L05 (SOT89 ALTERNATIVE) 3 1 OUT IN GND

POSSIBLE ALTERNATE (CHEAPER) PART ? (HAS RAM ALSO)

C

3

OUT

2

C5 1uF ceramic

GND

12V INPUT (POWERS Tft PCB ALSO)

5V

P6_2 1 2 3 4

[ IIC ADDR = $6F]

CONNECTS TO Tft PCB

32.768KHz XTAL SHOULD BE 12.5pF

spare (for other IIC devices)

EG FARNELL 1611828 OR 1652573 ABOUT 45C EACH

D2 BAT85

P5 5 WAY SOCKET STRIP 0.1"

4 WAY HEADER 0.1"

5 4 3 2 1

D1 BAT85 C3 1uF ceramic IC1B VC2 20pF X2 32.768KHz

1 2 INT 3 4

X1 Vcc X2 ClkOut INT SCL Vss SDA

8 7 6 5

_3 250311 corrected text re xtal on PCF8563

OUT

_2 220311 The RTC-8564 chip cannot be fitted to this PCB

SCL SDA

PCF8563 PCF8563T/F4

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21-02-11 Master for PCB vers "c" 160211 changed electro 1uF to ceramic 14-02-11 RTC, all chip types (DS PCB)

vk3pe

5 4 3 2 1

XTAL2 XX2

[ IIC ADDR PCF8563 = $51]

Jan 19th, 2011

Updated on:

P5A HEADER 5 WAY 0.1"

Updated by:

COMMERCIAL-IN-CONFIDENCE

SERIAL PORT Refer to Tft schematic for details.

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NOT TO BE DISCLOSED WITHOUT WRITTEN AUTHORITY Title:

'ROCKBY' REFERS TO www.rockby.com.au 'JAYCAR' is www.jaycar.com.au FARNELL is www.farnell.com

PCB file name:-

Size:

Number:

Issue:

A3 Printed on: 25-Mar-2011 11:25:45 Sheet 1 of 1 File: H:\PROJECT -RTC- PCB\PCD-DS-All\Chris- GP\RTC_Tft_ALL-TYPES_DS-PLATED_2C_Master_3.sch gp

H:\PROJECT -RTC- PCB\PCD-DS-All\Chris- GP\RTC_Tft_ALL-TYPES_DS-PLATED_2C_Master_3.sch 1

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