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参数资料
| 型号： | KIT908EINTFC |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 33/49页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL 908E625 QUAD W/MCU/LIN |
| 标准包装： | 1 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
39
908E625
TYPICAL APPLICATIONS
FACTORY TRIMMING AND CALIBRATION
TYPICAL APPLICATIONS
DEVELOPMENT SUPPORT
As the 908E625 has the MC68HC908EY16 MCU
embedded typically all the development tools available for
the MCU also apply for this device, however due to the fact
of the additional analog die circuitry and the nominal +12 V
supply voltage some additional items have to be considered:
nominal 12 V rather than 5.0 V or 3.0 V supply
high voltage VTST might be applied not only to IRQ pin,
but IRQ_A pin
For a detailed information on the MCU related
development support see the MC68HC908EY16 datasheet -
section development support.
The programming is principally possible at two stages in
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
On Chip level the easiest way is to only power the MCU
with +5.0 V (see Figure 23) and not to provide the analog
chip with VSUP, in this setup all the analog pin should be left
open (e.g. VSUP[1:3]) and interconnections between MCU
and analog die have to be separated (e.g. IRQ - IRQ_A).
This mode is well described in the MC68HC908EY16
datasheet - section development support.
Figure 23. Normal Monitor Mode Circuit (MCU only)
Of course its also possible to supply the whole system with
Vsup (12 V) instead as described in Figure 24, page 40.
PCB level programming
If the IC is soldered onto the pcb board its typically not
possible to separately power the MCU with +5.0 V, the whole
system has to be powered up providing VSUP (see
MM908E625
RST_A
RST
IRQ_A
IRQ
VSUP[1:3]
GND[1:2]
PTC4/OSC1
PTB3/AD3
PTB4/AD4
PTA0/KBD0
PTA1/KBD1
MAX232
10k
RS232
DB-9
1
3
C1+
C1-
4
5
C2+
C2-
7
8
2
3
5
VCC
GND
16
15
2
V+
V-
6
1F
+
1F
+
1F
+
1F
2
1
3
65
4
74HC125
9.8304MHz CLOCK
+5V
DATA
CLK
+5V
10k
VTST
10
9
T2OUT
R2IN
T2IN
R2OUT
EVDD
VDD
VSS
4.7F
100nF
+5V
VREFL
VDDA
EVSS
VREFH
VSSA
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