User Manual

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Table Of Contents

1 Introduction
- 1.1 Wireless Transceiver
- 1.2 RISC CPU and Memory
- 1.3 Peripherals
- 1.4 Block Diagram
2 Pin Configurations
- 2.1 Pin Assignment
- 2.2 Pin Descriptions
3 CPU
4 Memory Organisation
- 4.1 ROM
- 4.2 RAM
- 4.3 OTP eFuse Memory
- 4.4 External Memory
  - 4.4.1 External Memory Encryption
- 4.5 Peripherals
- 4.6 Unused Memory Addresses
5 System Clocks
- 5.1 16MHz System Clock
  - 5.1.1 32MHz Oscillator
  - 5.1.2 24MHz RC Oscillator
- 5.2 32kHz System Clock
6 Reset
- 6.1 Internal Power-on Reset
- 6.2 External Reset
- 6.3 Software Reset
- 6.4 Brown-out Detect
- 6.5 Watchdog Timer
7 Interrupt System
- 7.1 System Calls
- 7.2 Processor Exceptions
- 7.3 Hardware Interrupts
8 Wireless Transceiver
- 8.1 Radio
  - 8.1.1 Radio External Components
  - 8.1.2 Antenna Diversity
- 8.2 Modem
- 8.3 Baseband Processor
- 8.4 Security Coprocessor
- 8.5 Location Awareness
- 8.6 Higher Data Rates
9 Digital Input/Output
10 Serial Peripheral Interface
11 Timers
- 11.1 Peripheral Timer/Counters
- 11.2 Tick Timer
- 11.3 Wakeup Timers
  - 11.3.1 RC Oscillator Calibration
12 Pulse Counters
13 Serial Communications
- 13.1 Interrupts
- 13.2 UART Application
14 JTAG Debug Interface
15 Two-Wire Serial Interface
- 15.1 Connecting Devices
- 15.2 Clock Stretching
- 15.3 Master Two-wire Serial Interface
- 15.4 Slave Two-wire Serial Interface
16 Four-Wire Digital Audio Interface
17 Random Number Generator
18 Sample FIFO
19 Intelligent Peripheral Interface
- 19.1 Data Transfer Format
- 19.2 JN5148 (Slave) Initiated Data Transfer
- 19.3 Remote (Master) Processor Initiated Data Transfer
20 Analogue Peripherals
- 20.1 Analogue to Digital Converter
- 20.2 Digital to Analogue Converter
  - 20.2.1 Operation
- 20.3 Comparators
21 Power Management and Sleep Modes
- 21.1 Operating Modes
  - 21.1.1 Power Domains
- 21.2 Active Processing Mode
  - 21.2.1 CPU Doze
- 21.3 Sleep Mode
- 21.4 Deep Sleep Mode
22 Electrical Characteristics
- 22.1 Maximum Ratings
- 22.2 DC Electrical Characteristics
- 22.3 AC Characteristics
Appendix A Mechanical and Ordering Information
- A.1 56-pin QFN Package Drawing
- A.2 PCB Decal
- A.3 Ordering Information
- A.4 Device Package Marking
- A.5 Tape and Reel Information
Appendix B Development Support
- B.1 Crystal Oscillators
- B.2 32MHz Oscillator
- B.3 32kHz Oscillator
- B.4 JN5148 Module Reference Designs
  - B.4.1 Schematic Diagram
  - B.4.2 PCB Design and Reflow Profile
- Related Documents
- RoHS Compliance
- Status Information
- Disclaimers
- Version Control
- Contact Details

Jennic

64 JN-DS-JN5148-001 1v2 © Jennic 2009

Preliminary

22.2.3 I/O Characteristics

VDD = 2.0 to 3.6V, -40 to +85º C

Parameter Min Typ Max Unit Notes

Internal DIO pullup

resistors

TBA

kΩ

VDD2 = 3.6V, 25C

VDD2 = 3.0V, 25C

VDD2 = 2.2V, 25C

VDD2 = 2.0V, 25C

Digital I/O High Input

(except DIO9, DIO10)

VDD2 x 0.7 Lower of (VDD2 + 2V)

and 5.5V

V 5V Tolerant I/O only

Digital I/O High Input

( DIO9, DIO10)

VDD2 x 0.7 VDD2 V

Digital I/O low Input -0.3 VDD2 x 0.27 V

Digital I/O input hysteresis 140 230 310 mV

DIO High O/P (2.7-3.6V) VDD2 x 0.8 VDD2 V With 4mA load

DIO Low O/P (2.7-3.6V) 0 0.4 V With 4mA load

DIO High O/P (2.2-2.7V) VDD2 x 0.8 VDD2 V With 3mA load

DIO Low O/P (2.2-2.7V) 0 0.4 V With 3mA load

DIO High O/P (2.0-2.2V) VDD2 x 0.8 VDD2 V With 2.5mA load

DIO Low O/P (2.0-2.2V) 0 0.4 V With 2.5mA load

Current sink/source

capability

2.5

mA VDD2 = 2.7V to 3.6V

VDD2 = 2.2V to 2.7V

VDD2 = 2.0V to 2.2V

IL -

Input Leakage Current 50 nA Vcc = 3.6V, pin low

IH -

Input Leakage Current 50 nA Vcc = 3.6V, pin high

22.3 AC Characteristics

22.3.1 Reset and Voltage Brown-Out

RESETN

Internal RESET

VDD

POT

STAB

Figure 41: Internal Power-on Reset without showing Brown-Out