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參數(shù)資料
| 型號： | MPC555 |
| 廠商： | Motorola, Inc. |
| 元件分類： | 32位微控制器 |
| 英文描述： | Highly Integrated, Low-Power, 32-Bit Microcontroller |
| 中文描述： | 高度集成，低功耗，32位微控制器 |
| 文件頁數(shù)： | 6/32頁 |
| 文件大小： | 219K |
| 代理商： | MPC555 |
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Application Note
AN1778
6
MOTOROLA
NOTE:
Bit numbers are marked on the PC board, NOT on the switch; up is
ON (1).
SW702 — Push button = hard reset (HRESET)
SW703 — ON/STBY = ON: All power supplies are on.
STBY — V
DD
SRAM and KAPWR are left on.
Powering on the
Evaluation Board
DC power supply should be capable of 12 volts (7-36 volts) and 1A. To
turn it on:
1.
Connect the power leads to the EVB using the two clamp
connectors shown in
Figure 1
(in the top right hand corner of the
EVB). Be sure to observe voltage polarity specifications.
Turn on the power supply to 12 volts. Make sure the yellow
standby LED (light emitting diode) is lit.
To turn on the evaluation board and start the microcontroller,
throw the toggle switch (SW702) next to the green LED. Note that
the green LED should light up after the switch is thrown.
The MPC555 defaults to 20 MHz on the MPC555 EVB.
2.
3.
4.
DescriptionofLEDs
on the EVB
The evaluation board has four LEDs mounted on it, two of them red and
one each green and yellow. (See the part numbers on the board in
brackets.) They are:
1.
2.
3.
Red (LD701) — V
PP
12 volts available for FLASH programming
Red (LD700) — V
PP
5 volts available for FLASH programming
Green (LD702) — Evaluation board is on and MPC 555 is out of
RESET.
Yellow (LD703) — DC power is available and the board is in
standby mode
4.
Table 1. Reset Configuration Word
SW305
SW304
SW303
SW302
0
7
8
15
16
23
24
31
00 10 00 00
01 00 00 00
00 00 10 00
00 00 00 00
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