19-3013; Rev 0; 10/03
HS I2C-Compatible Module
Features
♦ HS-Mode I2C-Compatible Interface (3.4MHz, 1.7MHz)
♦ Fast-Mode I2C-Compatible Interface (400kHz)
♦ Standard-Mode I2C-Compatible Interface (100kHz)
♦ Proven Design
♦ Proven PC Board Layout
♦ On-Board 40MHz Crystal Oscillator
♦ On-Board Regulated +3.3V
Ordering Information
PART NUMBER
HSI2CMOD
INTERFACE TYPE
HS/Fast/Standard-Mode I2C-Compatible
Component List
DESIGNATION QTY
DESCRIPTION
C1–C15, C19,
C20, C21
18
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104KT
C16
1
1µF ±20%, 10V X5R ceramic
capacitor (0805)
TDK C2012X5R1A105M
DESIGNATION QTY
DESCRIPTION
R1, R2
2
1.5kΩ ±5% resistors (1206)
(suitable for a 2-wire bus capacitance
of ≤ 200pF)
R3, R4, R7
3
0Ω ±5% resistors (1206)
R5
1
165kΩ ±1% resistor (0603)
R6
1
100kΩ ±1% resistor (0603)
SW1
1
DIP switch default:
SW: 1-4 (ON)
SW: 2-3 (ON)
U1
1
Altera EPM3256AQC208-10
(208-pin PQFP)
C17
1
10µF ±20%, 25V X5R ceramic
capacitor (1210)
TDK C3225X5R1E106M
C18
1
100µF, 6.3V, 45mΩ low-ESR POSCAP
(D2)
Sanyo 6TPC100M
D1
1
1A, 30V Schottky diode
Nihon EP10QY03
U2
1
Step-down regulator (8-pin µMAX)
Maxim MAX1776EUA
FB1, FB2
2
Surface-mount ferrite beads (0603)
TDK MMZ1608B601C
U3
1
40MHz crystal oscillator (half-size DIP)
Oscilent 320-40.0M-5E-TTS
J1
1
Not installed,10-pin, 2 x 5 header
1
J2
1
20-pin, 2 x 10 male right-angle
connector
U4
Tri-state logic buffer (5-pin SOT23)
Fairchild Semiconductor
NC7SZ126M5X
J3
1
2 x 20 right-angle female connector
JU1, JU2, JU5
3
3-pin headers
U5, U6, U7
3
JU3, JU4, JU6,
JU7, JU8
Schmitt trigger input-logic inverters
(5-pin SOT23)
Fairchild Semiconductor
NC7SZ14M5X
5
2-pin headers
None
5
Shunts
L1
1
10µH inductor
Sumida CDRH6D28-100NC
P,
Is
ae
cfs.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Evaluates: HS I2C-Compatible Parts
General Description
The HS I2C-compatible module is a reference solution
for implementing an interface that is compatible with the
high-speed (HS) mode (3.4MHz, 1.7MHz), fast mode
(400kHz), and standard mode (100kHz) of the I2C standard. The module consists primarily of an Altera
EPM3256AQC208-10 programmable logic device (PLD)
containing the DI2CM core available from Digital Core
Design. The module allows microcontrollers (µCs) with a
compatible 8-bit-memory-mapped parallel interface to
communicate with I2C-compatible slave devices.
The HS I2C-compatible module is provided as part of
selected Maxim evaluation systems. The main purpose
of the HS I2C-compatible module is the evaluation of
Maxim products. The use of the HS I 2C-compatible
module as a development board or any other use not
described in selected Maxim evaluation kit (EV kit)/
evaluation system (EV system) data sheets is not supported by Maxim.
Evaluates: HS I2C-Compatible Parts
HS I2C-Compatible Module
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Altera
Corporation
1-800-800-3753 www.altera.com
Digital Core
Design
48-32282-8266 www.digitalcoredesign.com
Fairchild
1-888-522-5372 www.fairchildsemi.com
Semiconductor
Nihon
81-33343-3411 www.niec.co.jp
Oscilent
1-949-252-0522 www.oscilent.com
Sanyo
1-619-661-6322 www.sanyo.com
Sumida
1-847-545-6700 www.sumida.com
TDK
1-847-803-6100 www.component.tdk.com
Note: Please indicate that you are using a Maxim part when
contacting these component suppliers.
Description of Hardware
HS I2C-Compatible Module Supplies
Table 3. GPIOA
JUMPER
JU3
SHUNT POSITION
ON
OFF*
JUMPER
JU4
SHUNT POSITION
ON
OFF*
JUMPER
JU5
JUMPER
SHUNT POSITION
JU1
SHUNT POSITION
DESCRIPTION
1-2
3.3V I2C-compatible interface
2-3*
5V I2C-compatible interface
JU2
2
SHUNT POSITION
DESCRIPTION
1-2*
Enable the crystal oscillator
2-3
Disable the crystal oscillator
____________________________________________________
DESCRIPTION
Reset the PLD
2-3*
Normal operation mode
SHUNT POSITION
DESCRIPTION
ON
The RD line to connector J3
pin 9 (J3-9) is active high;
remove U5
OFF*
The RD line to connector J3
pin 9 (J3-9) is active low; U5
must be present for proper
operation
Table 7. Active-High CS-Line Option
JUMPER
SHUNT POSITION
DESCRIPTION
ON
The CS line to connector J3
pin 11 (J3-11) is active high;
remove U6
OFF*
The CS line to connector J3
pin 11 (J3-11) is active low;
U6 must be present for
proper operation
JU7
Table 8. Active-High WR-Line Option
JUMPER
SHUNT POSITION
DESCRIPTION
ON
The WR line to connector J3
pin 10 (J3-10) is active high;
remove U7
OFF*
The WR line to connector J3
pin 10 (J3-10) is active low;
U7 must be present for
proper operation
Table 2. Crystal Oscillator Enable
JUMPER
Disconnect GPIOB
1-2
JU6
Table 1. I2C-Compatible Logic-Supply
Selection
JUMPER
Do not use
Table 6. Active-High RD-Line Option
HS I2C-Compatible Module Jumpers
*The asterisks in the tables below indicate the default
configuration.
DESCRIPTION
Table 5. Global PLD Clear (GCLR)
EPM3256AQC208-10 PLD (Altera)
The EPM3256AQC208-10 is from Altera’s MAX3000A
family of PLDs. This 256 product-term device accepts
3.3V or 5V logic even when powered from a 3.3V supply. Contact Altera for any questions relating to the
PLD. See the Component Suppliers section for contact
information.
Disconnect GPIOA
Table 4. GPIOB
I2C-compatible
The HS
module requires two supplies.
The on-board 3.3V regulator requires an input voltage at
VIN of 4.5V to 24V (J3-5, J3-6). The module also requires
a regulated 5V logic supply (J3-7, J3-8). A Maxim µC
module normally provides both of these supplies.
DESCRIPTION
Do not use
JU8
J3–31 J3–32
J3–33 J3–34
GPIOB
GCLR
J3–39 J3–40
J3–37 J3–38
J3–35 J3–36
J3–29 J3–30
J3–25 J3–26
D6
J3–27 J3–28
J3–23 J3–24
D4
INT
J3–21 J3–22
GPIOA
J3–19 J3–20
D2
J3–17 J3–18
J3–15 J3–16
J3–13 J3–14
D0
AI0
J3–11 J3–12
J3–10
J3–8
J3–6
CS
J3–7
J3–5
J3–4
J3–3
J3–9
+5V
J3–2
+5V
J3–1
1
JU1 2
3
+3.3V
RD
VIN
+5V
+3.3V
PGND
FB1
C16
1µF
+5V
CS
J3
RD
2
A
JU6
INT
AI1
AI0
D7
D6
D5
D4
D3
+3.3V
3
1
JU5 2
+3.3V
+5V
D3
C20
0.1µF
5
2
VCC
A
4
Y
N.C. 1
3
GND
U6
4
U5 Y
+5V
N.C. 1
D5
5
3
VCC GND
D7
C19
0.1µF
JU7
D1
AI1
WR
VIN
D2
D1
D0
8
5
VCC OUT
1
U3
2 JU2 1
OE GND
3
4
GCLR
VDD
+5V
59
57
49
34
28
22
20
18
16
12
10
8
3
181
183
182
184
CS
RD
INT
AI1
AI0
D7
D6
D5
D4
D3
D2
D1
D0
INPUT/OE2/GCLK2
INPUT/OE1
GCLR
INPUT/GCLK1
GNDINT
75
FB2
82
GNDINT
DGND
C3
0.1µF
180
GNDINT
C1
0.1µF
C4
0.1µF
185
GNDINT
C2
0.1µF
74
VCCINT
83
6
179
VCCINT
GNDIO
186
VCCINT
GNDIO
14
VCCINT
5
U1
107
ALTERA
EPM3256AQC208-10
GNDIO
40
GNDIO
50
GNDIO
72
GNDIO
84
GNDIO
32
VCCIO
23
VCCIO
41
VCCIO
68
VCCIO
85
VCCIO
GNDIO
94
C6
0.1µF
WR
GPIOB
GPIOA
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
PSCLHS
PSCL
PSDA
TDI
TMS
4
VDD
GND 3
U4
Y
R1
1.5kΩ
2
Y U7 A
1 N.C.
5
3
GND VCC
JU8
GPIOB
110
4
OE
A
VCC
JU4
55
J1–8
J1–7
J1–9 J1–10
J1–6
J1–5
J1–2
J1–4
J2–5
C21
0.1µF
+5V
WR
J2–19 J2–20
J2–17 J2–18
J2–15 J2–16
J2–13 J2–14
J2–11 J2–12
J2–9 J2–10
J2–8
J2–4
J2–6
J2–3
J2–7
J2–2
J2–1
CONNECTOR 2 X 10
SCL
SDA
J2
2
1
C12
0.1µF
R2
1.5kΩ
C11
0.1µF
+3.3V
J1
C10
0.1µF
SDA R4
0Ω
C9
0.1µF
J1–3
C8
0.1µF
J1–1
GPIOA
SCL
SDA
1
2
5
111
1
2
51
52
53
54
103
104
105
106
155
156
157
158
207
208
VDD
R3
0Ω
C7
0.1µF
JU3
114
C15
0.1µF
118
123
176
127
TCK 30
189
TDO
C5
0.1µF
GNDIO
VCCIO
GNDIO
108
125
VCCIO
GNDIO
116
143
VCCIO
GNDIO
134
165
VCCIO
GNDIO
142
191
VCCIO
GNDIO
152
GNDIO
174
GNDIO
190
SCL
SCL
VDD
VIN
3
4
SDA
SW1
C13
0.1µF
C14
0.1µF
Evaluates: HS I2C-Compatible Parts
200
+3.3V
HS I2C-Compatible Module
Figure 1. HS I2C-Compatible Module Schematic
_______________________________________________________________________________________
3
Evaluates: HS I2C-Compatible Parts
HS I2C-Compatible Module
Description of PLD Core
5
VIN
C17
10µF
25V
3
OUT
IN
ILIM
DI2CM Core (Digital Core Design)
U2
MAX1776
FB
6
8
1
R5
165kΩ
1%
R6
100kΩ
1%
ILIM2
LX
L1
10µH
4
D1
7
SHDN
The DI2CM is an I2C-compatible master-IP core from
Digital Core Design. Please contact Digital Core Design
for any questions relating to the DI2CM IP core. See the
Component Suppliers section for contact information or
email Digital Core Design at info@dcd.pl for more information.
GND
R7
0Ω
+3.3V
C18
100µF
6.3V
2
Figure 2. HS I2C-Compatible Module Schematic (Continued)
Figure 3. HS I2C-Compatible Module Component Placement Guide—Component Side
4
_______________________________________________________________________________________
HS I2C-Compatible Module
Evaluates: HS I2C-Compatible Parts
Figure 4. HS I2C-Compatible Module PC Board Layout—Component Side
_______________________________________________________________________________________
5
Evaluates: HS I2C-Compatible Parts
HS I2C-Compatible Module
Figure 5. HS I2C-Compatible Module PC Board Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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© 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.