User's Manual

SPZB250 Pin settings
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Pin n Pin name Direction Description
10
GPIO2 I/O Digital I/O
MSCLK O SPI master clock of serial controller SC2
MSCLK I SPI slave clock of serial controller SC2
SCL I/O I2C clock of serial controller SC2
TMR2IA.2 I Capture of Input B of timer 2
11 GND -- Ground
12 VDD Power Input power supply
13
GPIO7 I/O Digital I/O
ADC3 Analog ADC Input 3
REG_EN O External regulator open collector output
14
GPIO8 I/O Digital I/O
VREF_OUT Analog ADC reference output
TMR1CLK I External clock input of timer 1
TMR2ENMSK I External enable mask of timer 2
IRQA I External interrupt source A
15
GPIO9 I/O Digital I/O
TXD O UART transmit data of serial controller SC1
MO O SPI master data out of serial controller SC1
MSDA I/O I2C data of serial controller SC1
TMR1IA.2 I Capture of input A of timer 2
16
GPIO10 I/O Digital I/O
RXD I UART receive data of serial controller SC1
MI I SPI master data in of serial controller SC1
MSCL I/O I2C clock of serial controller SC1
TMR1IB.2 I Capture of Input B of timer 2
17 SIF_CLK I
Non-intrusive debug Interface
Serial interface clock signal ( internal pulldown)
18 SIF_MISO O
Non-intrusive debug Interface
Serial interface master IN/ Slave Out
19 SIF_MOSI I
Non-intrusive debug Interface
Serial interface master Out/ Slave In
To guarantee a proper signal level when in deep sleep mode
connect a 10kΩ resistor to GND
20 SIF_LOADB I/O
Non-intrusive debug Interface
Serial interface load strobe ( Open collector with internal pull-up)
To improve noise immunity connect a 10kΩ resistor to V
DD
Table 1. Pin description (continued)