JN5121 Jennic, JN5121 Datasheet - Page 2

• Manufacturer Part Number: JN5121
• Description: Ieee802.15.4 / Zigbee Wireless Microcontroller
• Manufacturer: Jennic

The JN5121 IEEE802.15.4 wireless microcontroller allows very small low power, low cost modules to be
constructed. The high level of integration ensures that a minimum of external components are required to
implement the majority of sensor and control applications, enabling extremely compact modules to be
designed without recourse to advanced PCB technologies. Jennic provides reference module designs that
can be readily customised.
The module illustrated is just 18x30mm in size, including an integrated antenna. Reference designs are
consistent with FCC CFR47, Part 15 (US), ETSI EN 300 440 (EU), ARIB STD-T66 (Japan).
Application Diagram
The JN5121 requires minimal external components to
support wireless applications – a crystal, flash memory,
decoupling components and printed antenna are all that is
required for the lowest bill of materials cost and smallest
size. The wireless microcontroller connects to the
Software Developer Kit running on a PC via a UART and
the rest of the peripherals are available for the application.
Jennic also provides IEEE802.15.4 protocol software, an
evaluation kit comprising of controller and sensor units,
reference modules and software development tools.
Evaluation Kits
Jennic provides an Evaluation Kit (JN5121-EK) which ensures that the user can quickly, easily and effectively develop
applications around wireless sensor networks. It includes a controller board, four sensor boards and an RS-232 interface
cable to the PC-based development tools.
A Software Developer Kit (SDK) provides a comprehensive suite of tools to facilitate the development of application code.
The kit includes a C compiler, graphical and text debuggers, assembler/linker and flash programmer.
Libraries are included with the SDK that drive the peripherals of the JN5121 wireless microcontroller. Applications call
library functions via a simple Application Programming Interface (API).
Wireless Protocol Stacks
A library is provided as standard for an IEEE802.15.4 compliant protocol stack suitable for point-to-point, star or tree networks.
Libraries are also available for mesh network stacks such as ZigBee and IPv6.
© Jennic Ltd 2008 – www.jennic.com
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JN5121-PB v2.32
RESET
UART 1
C10
C11
Y1
CLK O/P
Serial Port
C15
Two Wire
C8
Japan Sales Office
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C7
VCOTUNE
VB_PROT
XTALOUT
C9
R4
Vcc
CLK_OP
RESETN
VB_SYN
XTALIN
VSSS
RXD1
VSS2
VSS3
CTS1
RTS1
TXD1
C2
C12
1
15
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Timers
Printed Antenna
R9
Jennic
JN5121
C13
C3
C1
Vcc
43
C4
29
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UART 0
SPISEL3
SPISEL2
MISO
MOSI
COMPP
VB_MEM
VSS1
SPISEL1
SPISEL0
VB_APP
SPICLK
COMPM
DAC2
DAC1
C6
C5
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[phone]
[e-mail]
Analogue IO
reference module
SPI Selects
1
2
3
4
SS
SDO
W P
Vss
Page 2 of 2
Memory
Serial
Flash
IC2
HOLD
CLK
Vcc
SDI
8
7
6
5
Vcc