EM351 Datasheet, PDF (13/240 Pages) List of Unclassifed Manufacturers – High-Performance, Integrated ZigBee/802.15.4 System-on-Chip

EM351 / EM357
Pin # Signal
Direction Description
TRACEDATA1 O
Synchronous CPU trace data bit 1
Select 2- or 4-wire synchronous trace interface in ARM core
Enable trace interface in ARM core
Select alternate output function with GPIO_PCCFGL[3:0]
41 PB7
I/O
High
current
Digital I/O
ADC2
IRQC¹
Analog
I
ADC Input 2
Enable analog function with GPIO_PBCFGH[15:12]
Default external interrupt source C
TIM1C2
O
Timer 1 channel 2 output
Enable timer output in TIM1_CCER
Select alternate output function with GPIO_PBCFGH[15:12]
TIM1C2
I
Timer 1 channel 2 input
Cannot be remapped
42 PB6
I/O
High
current
Digital I/O
ADC1
Analog
ADC Input 1
Enable analog function with GPIO_PBCFGH[11:8]
IRQB
I
External interrupt source B
TIM1C1
O
Timer 1 channel 1 output
Enable timer output in TIM1_CCER
Select alternate output function with GPIO_PBCFGH[11:8]
TIM1C1
I
Timer 1 channel 1 input
Cannot be remapped
43 PB5
I/O
Digital I/O
ADC0
Analog
ADC Input 0
Enable analog function with GPIO_PBCFGH[7:4]
TIM2CLK
I
Timer 2 external clock input
TIM1MSK
I
Timer 1 external clock mask input
44 VDD_CORE
Power
1.25 V digital core supply decoupling
45 VDD_PRE
Power
1.8 V prescaler supply
46 VDD_SYNTH
Power
1.8 V synthesizer supply
47 OSCB
I/O
24 MHz crystal oscillator or left open when using external clock input on
OSCA
48 OSCA
I/O
24 MHz crystal oscillator or external clock input
49 GND
Ground
Ground supply pad in the bottom center of the package forms Pin 49.
See Ember’s various EM35x Reference Design documentation for PCB
considerations.
1_{IRQC and IRQD external interrupts can be mapped to any digital I/O pin using the GPIO_IRQSEL and GPIO_IRQDSEL registers.}
1-9
Preliminary
120-035X-000D