AN-000260
Document Number: AN-000260
Page 4 of 10
Revision: 1.0
2
EV_MOD_CH101 EVALUATION MODULE BOARD
2.1
PIN ASSIGNMENTS
Table 1. EV_MOD_CH101 ZIF Connector Pin-Out
PIN
NAME
DESCRIPTION
1
INT
Interrupt output. Can be switched to input for triggering and calibration functions
2
SCL
SCL Input. I
2
C clock input. This pin must be pulled up to VDD externally.
3
SDA
SDA Input/Output. I
2
C data I/O. This pin must be pulled up to VDD externally.
4
PROG
Program Enable. This pin must be pulled down to ground externally.
5
RESET_N
Active-low reset. This pin must be pulled up to VDD externally.
6
VSS
Power return.
7
VSS
Power return.
8
VDD
Power supply input. Connect to externally regulated 1.8V supply
2.2
ELECTRICAL SPECIFICATIONS
Please refer to DS-000331 CH101 Datas
heet for information on the device’s electrical
characteristics. Please note that the datasheet
covers CH101 part numbers with different suffixes. Regardless, the electrical specifications in the datasheet still apply.
2.3
SCHEMATIC
Electrical connection to the EV_MOD_CH101 module is via an 8-pin 0.5 mm pitch flat flex cable (FFC) connector. Part numbers of the
FFC connectors on the module PCB and the recommended FFC cables are shown in Table 2. The electrical schematic of the module,
including the connector pinout and the connections to the EV_MOD_CH101 module, are shown in Figure 2-1. Note that the 0.1
μF
decoupling capacitor, as recommended in the CH101 datasheet, is included in the module. Consult the CH101 datasheet and
application notes for additional information on the electrical connections and operation.
Figure 2-1. EV_MOD_CH101 Schematic
