MM908E621_08 FREESCALE [Freescale Semiconductor, Inc], MM908E621_08 Datasheet - Page 54

• Manufacturer Part Number: MM908E621_08
• Description: Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

DEVELOPMENT SUPPORT
embedded, typically all the development tools available for
the MCU also apply for this device. However, due to the
additional analog die circuitry and the nominal +12V supply
voltage, some additional items have to be considered:
development support, see the MC68HC908EY16 datasheet -
section development support.
with V
54
908E621
TYPICAL APPLICATIONS
RS232
As the 908E621 has the MC68HC908EY16 MCU
• nominal 12V rather than the 5V or 3V supply
• high voltage V
• MCU monitoring (Normal request timeout) has to be
For a detailed information on the MCU related
2
3
5
Of course it is also possible to supply the whole system
DB-9
but IRQ_A pin
disabled
SUP
1µF
1µF
instead (12V) as described in
+
+
1
3
4
5
7
8
C1+
C1-
C2+
C2-
T2
R2
OUT
TST
IN
MAX232
might be applied not only to IRQ pin,
R2
GND
V
T2
OUT
V+
V-
CC
IN
16
15
2
6
10
9
+5V
2
74HC125
Figure 30. Normal Monitor Mode Circuit (MCU only)
+
+
1
1µF
1µF
Figure
3
+
1µF
6
74HC125
TYPICAL APPLICATIONS
31, page 55.
4
5
+5V
10k
V
the manufacturing process, first on chip level, before the IC is
soldered onto a pcb board, and second after the IC is
soldered onto the pcb board.
Chip level programming
with +5V (see
with VSUP. In this setup, all the analog pins should be left
open (e.g. VSUP[1:8]), and interconnections between the
MCU and analog die have to be separated (e.g.
datasheet, section development support.
TST
9.8304MHz CLOCK
PCB level programming
possible to separately power the MCU with +5V. The whole
system has to be powered up providing V
Figure
The programming is principally possible at two stages in
At the Chip level, the easiest way is to only power the MCU
This mode is well described in the MC68HC908EY16
If the IC is soldered onto the pcb board, it is typically not
31).
DATA
CLK
Figure
VSUP[1:8]
GND[1:4]
RST
RST_A
IRQ
IRQ_A
PTC4/OSC1
PTA0/KBD0
30), and not to provide the analog chip
Analog Integrated Circuit Device Data
MM908E621
VDDA/VREFH
VSSA/VREFL
TESTMODE
Freescale Semiconductor
PTA1/KBD1
PTB4/AD4
PTB3/AD3
EVDD
EVSS
VDD
VSS
SUP
100nF
(see
10k
10k
10k
IRQ
+5V
-
+5V
IRQ_A
4.7µF
).