mm908e621 Freescale Semiconductor, Inc, mm908e621 Datasheet - Page 53

• Manufacturer Part Number: mm908e621
• Description: Integrated Quad Half-bridge And Triple High-side With Embedded Mcu And Lin For High End Mirror
• Manufacturer: 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.
Vsup instead (12V) as described in
Analog Integrated Circuit Device Data
Freescale Semiconductor
RS232
As the 908E621 has the MC68HC908EY16 MCU
• nominal 12V rather than 5V or 3V supply
• high voltage V
• MCU monitoring (Normal request time-out) has to be
For a detailed information on the MCU related
2
3
5
Of course its also possible to supply the whole system with
DB-9
terminal, but IRQ_A terminal
disabled
1µF
1µF
+
+
1
3
4
5
7
8
C1+
C1-
C2+
C2-
T2
R2
OUT
IN
TST
MAX232
might be applied not only to IRQ
R2
GND
V
T2
OUT
V+
V-
CC
IN
16
15
2
6
10
9
+5V
2
Figure
74HC125
Figure 30. Normal Monitor Mode Circuit (MCU only)
+
+
1
1µF
1µF
3
31, page 54.
+
1µF
6
74HC125
TYPICAL APPLICATIONS
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 terminal should be left
open (e.g. VSUP[1:8]) and interconnections between MCU
and analog die have to be separated (e.g.
datasheet - section development support.
TST
9.8304MHz CLOCK
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
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
MM908E621
VDDA/VREFH
VSSA/VREFL
TESTMODE
PTA1/KBD1
PTB4/AD4
PTB3/AD3
TYPICAL APPLICATIONS
EVDD
EVSS
VDD
VSS
IRQ
100nF
-
10k
10k
10k
IRQ_A
+5V
+5V
908E621
).
4.7µF
53