User's Manual

COMPANY CONFIDENTIAL
7
4. Product Requirements
4.1 Hardware Requirements
Form factor
42 mm x30mm module with 10-pin FPC connector
Host Interface
BSC (I
2
C -compatible) interface
PCB
4-layer design
4.2 Hardware Architecture
The T77H395.00 NFC module is based on Broadcom BCM20792S solution, which is
integrated NFC subsystem, interfaces, and microprocessor and memory unit. This module
is powered from the host (3.3V) and interfaces to the host with I
2
C signals and with one-
printed antennas, one on-board 26 MHz XTAL and option for one Secure Element (eSE)
with 800kBytes flash memory.
The functional block diagram is shown as below.
5. Interface of Connector
Pin definition
Pin Symbol I/O Note
1
VBAT Input Power supply from battery (2.3V - 5.5V)
2
VDDIO Input Power supply to I/O (1.62V – 3.6V)
3
VDD_Ext_SE
Outpu
t
Power supply to External Secure Element (1.65V -
1.95V)
4
I
2
C -SDA I/O BSC Serial Data Line, active low
5
I
2
C -SCL I BSC Serial Clock
6
GND G Ground
7
IRQ-NFC O BSC request, active high
8
UIM_PWR Input Power supply to UICC
9
SWP I SWP I/O 0 (Single-Wire Protocol interface)
10
NFC_PRESENCE G Ground
S1
GND G Ground
S2
GND G Ground