NXP Semiconductors
S32K312EVB-Q172 HWUM
S32K312EVB-Q172 | S32K312EVBQ172ND - Hardware User Manual
S32K312EVB-Q172
S32K312EVBQ172ND
HWUM
All Information provided in this document is subject to legal disclaimers
© NXP B.V. 2020. All rights reserved
NXP Semiconductors
REV A1
– 01/2022
Page
10
of
25
7.1.1 S32K312EVB-Q172
– FS26/Modes Operation
Figure 5. S32K312EVB-Q172
– FS26/Modes Operation
Table 3. S32K312EVB-Q172
– FS26/Modes Operation
Reference
Jumper Position
Description
Comments
Flash Mode
[Default
configuration]
J1
1-2
The R2 resistor to VBATP (VBAT pro12.0V) is routed as
pull-up to the VDEBUG Pin. This is a common pull-up resistor for
the 2 voltage divider configurations, with R6 or R297.
J5
1-2
The R297 is selected for the divider voltage, +8.0V is applied on
VDEBUG pin to set the FS26-SBC on MCU Flash Mode. In this
mode device power up sequence starts with debug mode
enabled and can be used during customer production process to
flash MCU without need of WD refresh. After ~80ms once the
SW1 is in ON-position the VDEBUG pin will be switching to a low
voltage (GND) due to the RC delay circuitry and Q18
Debug
Mode
J1
1-2
The R2 resistor to VBATP (VBAT pro12.0V) is routed as
pull-up to the VDEBUG Pin. This is a common pull-up resistor for
the 2 voltage divider configurations, with R6 or R297.
J5
2-3
The R297 is selected for the divider voltage, +5.0V is applied on
VDEBUG pin to set the FS26-SBC on Debug Mode, voltage must
be removed from debug pin in order to start power up sequence.
In this mode Watchdog refresh is not needed. After ~80ms once
the SW1 is in ON-position the VDEBUG pin will be switching to a
low voltage (GND) due to the RC delay circuitry and Q18.
R13
33K
FS26_VDEBUG
R32
5.1K
R65
100k
C3
10uF
25V
VBATP_SW
C81
0.22UF
0402
35V
R2
10K
R7
0
0402
D16
MMSZ8V2T1G
A
C
R297
33K
J5
HDR 1X3
SILK = VDBG_MODE
JUMPER(Default) = 1-2
1
2
3
Q1
BC846B
2
3
1
GND
VBATP
FS26_VDEBUG
Page[3]
R6
15K
J1
HDR1X2
SILK = VDBG_RMODE
JUMPER(Default) = 1-2
1
2