EM35X-DEV-IAR Ember, EM35X-DEV-IAR Datasheet - Page 41
EM35X-DEV-IAR
Manufacturer Part Number
EM35X-DEV-IAR
Description
KIT DEV EM35X IAR EWARM ZIGBEE
Manufacturer
Ember
Series
EM35xr
Type
Zigbeer
Specifications of EM35X-DEV-IAR
Frequency
2.4GHz
For Use With/related Products
EM351, EM357
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
636-1027
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6.2
Resets
The EM35x resets are generated from a number of sources. Each of these reset sources feeds into central reset
detection logic that causes various parts of the system to be reset depending on the state of the system and
the nature of the reset event.
6.2.1
6.2.1.1 Power-On-Resets (POR HV and POR LV)
The EM35x measures the voltage levels supplied to the three power domains. If a supply voltage drops below a
low threshold, then a reset is applied. The reset is released if the supply voltage rises above a high threshold.
There are three detection circuits for power-on-reset as follows:
The POR LVcore and POR LVmem reset sources are merged to provide a single reset source, POR LV, to the
Reset Generation module, since the detection of either event needs to reset the same system modules.
Parameter
Always-on domain release
Always-on domain assert
Supply rise time
Parameter
1.25 V domain release
1.25 V domain assert
Parameter
1.8 V domain release
1.8 V domain assert
POR HV monitors the always-on domain supply voltage. Thresholds are given in Table 6-1.
POR LVcore monitors the core domain supply voltage. Thresholds are given in Table 6-2.
POR LVmem monitors the memory supply voltage. Thresholds are given in Table 6-3.
Reset Sources
Table 6-2. POR LVcore Thresholds
Table 6-3 POR LVmem Thresholds
Table 6-1. POR HV Thresholds
Test conditions
Final
Test conditions
6-3
Test conditions
From 0.5 V to 1.7 V
Min
0.8
0.9
1.35
1.26
Min
0.62
0.45
Min
EM351 / EM357
Typ
1.0
0.9
0.95
0.65
Typ
Typ
1.5
1.4
Max
1.1
1.0
Max
1.65
1.54
Max
1.20
0.85
250
120-035X-000G
Unit
Unit
Unit
µs
V
V
V
V
V
V
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