Amp’ed RF, Inc.
(phone) 408 213-9530
(fax) 408 213-9533
ZB-21
ZigBee OEM Module
Features
•
Full ZigBee standard support
•
15mm x 27mm
Complete RF ready module
•
Integrated chip antenna
•
OKI ARM7 microprocessor up to 33MHz
•
128K or 64K bytes of flash memory
Description
One of the most capable ZigBee modules available, the ZB-21 ZibBee OEM
Module is designed for maximum flexibility. The ZB-21 module includes an
OKI ARM7TDMI processor and a full function ZigBee RF radio.
•
16K bytes of SRAM memory
•
2K bytes of EEPROM memory
•
250K bps RF data rate
•
128-bit encryption security
•
Range up to 30m Indoor, 100m LOS
•
16550 UART
The AR ZB-21 is a surface mount PCB module that provides fully embedded,
ready to use ZigBee wireless technology. The ARM7 processor is available
for flexible custom development, which makes this a true wireless micro-
controller device.
Power consumption has been carefully optimized for battery powered
applications, <25uA in sleep state.
Custom firmware may be easily pre-loaded into these highly tuned and tested
modules so that they are ready to install without additional procedures.
•
SPI interface
•
I2C interface
•
4 A/D inputs
•
12 general purpose I/O, 3 are 20mA capable
•
AT command set
•
Low power modes, <25uA
Typical Wireless Applications
Additional Documentation
•
Quick Start Guide
•
zbSerial Reference Guide
•
HW Design Guide
Cable replacement/Serial communications
Industrial diagnostics and control
Wireless POS transactions
Telemetry/Remote sensing and data capture
Medical device communications
Commercial/Home building automation
Energy metering and control
©2008 Amp’ed RF Inc
1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA
www.ampedrf.com
ZB21 Datasheet 07/21/2008
Page 1 of 5
Amp’ed RF, Inc.
(phone) 408 213-9530
(fax) 408 213-9533
Hardware Specifications
Recommended Operating Conditions Current Consumption
Unit
mA
uA
mA
General Conditions (VIN = 3.3V and 25°C)
Modes
Avg
Typical Power Consumption
Typical data transmit
45
Power down
25
Peak current
90
Selected RF Characteristics
Unit
ohm
dBm
dBm
Parameters
Typical
Antenna load
50
Sensitivity level
-92
Tx output power
-1
Absolute Minimum and Maximum Ratings
Max
+70
5.0
-
2480
+150
+ 5.0
3.6
Volts
Volts
°C
MHz
Volts
Volts
°C
Rating
Min
Typical
Unit
Operating Temperature Range
-20
+25
Supply Voltage VIN
2.85
3.0
Signal Pin Voltage
-
2.7
RF Frequency
2405
-
Storage temperature range
-55
-
Supply voltage, VIN
-0.3
-
Signal Pin Voltage
-0.3
-
©2008 Amp’ed RF Inc
1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA
www.ampedrf.com
KC21 Datasheet 03/3/2008
Page 2 of 5
Amp’ed RF, Inc.
(phone) 408 213-9530
(fax) 408 213-9533
Pin Assignment
Description
VIN
GND
Name
Type
Pin#
Alt Function
VIN
GND
24
11, 23
UART Interface
RXD
TXD
CTS
RTS
External Clock Input
(optional)
I
O
I
O
8
6
9
10
Receive data
Transmit data
Clear to send (active low)
Request to send (active low)
Special Function for Flash ROM
SYSCLK
I
15
Input System Clock (4-33MHz)
MODE2
Input (active low)
Boot ROM, high
Application ROM, low
Reserved for testing
I
16
System Clock Source:
Internal (H),External (L)
BOOT0
I
20
MODE3
RESET
SPI; MOSI
SPI; SCLK
SPI; SSN
A/D, AIN2
A/D, AIN0
20mA current sink
20mA current sink
20mA current sink
I
I
22
3
(Default: Pull Down)
Reset input (active low for 5 ms);
GPIO – General Purpose Input/Output
GPIO [0]
I/O
1
General Purpose Input/Output
GPIO [1]
I/O
2
General Purpose Input/Output
GPIO [2]
I/O
4
General Purpose Input/Output
GPIO [3]
I/O
5
General Purpose Input/Output
GPIO [4]
I/O
7
General Purpose Input/Output
GPIO [5]
I/O
12
General Purpose Input/Output
GPIO [6]
I/O
13
General Purpose Input/Output
GPIO [7]
I/O
14
General Purpose Input/Output
GPIO [8]
I/O
17
General Purpose Input/Output
A/D, AIN3
A/D, AIN1
SPI; MISO
GPIO [9]
I/O
18
General Purpose Input/Output
GPIO [10]
I/O
19
General Purpose Input/Output
GPIO [11]
I/O
21
General Purpose Input/Output
©2008 Amp’ed RF Inc
1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA
www.ampedrf.com
KC21 Datasheet 03/3/2008
Page 3 of 5
Amp’ed RF, Inc.
(phone) 408 213-9530
(fax) 408 213-9533
Hardware Design
The UART is compatible with the 16550 industry standard. Four
signals are provided with the UART interface. The TXD and RXD
pins are used for data while the CTS and RTS pins are used for
flow control.
UART Interface
Amp’ed RF modules support UART, SPI, and GPIO hardware interfaces. This section details
typical usage models for these features. Please note that the usage of these interfaces is
dependant upon the firmware that is loaded into the module, and is beyond the scope of this
document.
Notes
RESET pin is internally pulled high.
BOOT0 in should be tied low to start from application code ROM, high will enable the boot
ROM code for Oki ISFP chip programming.
MODE2 is internally pulled high, to use the internal clock source by default.
MODE3 is internally pulled low. This pin is reserved for testing.
All GND pins must be well grounded.
The area around the module should be free of any ground planes, power planes, trace routings,
or metal for at least 8 mm from the antenna in all directions.
Traces should not be routed underneath the module.
Module Reflow Installation
PCB Layout Guidelines
The ZB-21 is a surface mount module supplied on a 24 pin, 4-layer PCB. The final assembly
recommended reflow profile is:
For RoHS/Pb-free applications, Sn96.5/Ag3.0/Cu0.5 solder is recommended.
Maximum peak temperature of 230° - 240°C (below 250°C).
Maximum rise and fall slope after liquidous of < 2°C/second.
Maximum rise and fall slope after liquidous of < 3°C/second.
Maximum time at liquidous of 40 – 80 seconds.
GPIO Interface
All GPIOs are capable of sinking and sourcing 3mA of I/O current, except GPIO5,6,and 7,
which can sink 20mA of current. These pins are 5V tolerant.
©2008 Amp’ed RF Inc
1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA
www.ampedrf.com
KC21 Datasheet 03/3/2008
Page 4 of 5
Amp’ed RF, Inc.
(phone) 408 213-9530
(fax) 408 213-9533
Ordering Information
Part Name
Description
ZB-21
Integrated chip antenna
ZB-21L
No antenna, 50 ohm RF port
ZB-21Ext
Supports U.FL external antenna connector
Picture Not
Available
ZB-21L
ZB-21Ext
ZB-21
©2008 Amp’ed RF Inc
1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA
www.ampedrf.com
KC21 Datasheet 03/3/2008
Page 5 of 5
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