- 您現在的位置：買賣IC網 > PDF目錄359091 > M68HC12A4EVB (飛思卡爾半導體(中國)有限公司) Primarily as an Expanded Mode Microcontroller PDF資料下載
參數資料
| 型號： | M68HC12A4EVB |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Primarily as an Expanded Mode Microcontroller |
| 中文描述： | 主要作為擴展單片機模式 |
| 文件頁數： | 2/4頁 |
| 文件大?。?/td> | 194K |
| 代理商： | M68HC12A4EVB |
Engineering Bulletin
EB350
2
MOTOROLA
Hardware Setup
Setting up the A4EVB in special expanded narrow mode requires
modifying the evaluation board.
Follow these steps to make the modification:
When setting up the evaluation board, turn off the power to the
A4EVB.
Jumpers W42 and W34 should be shunted between pins 1 and 2.
W30 should be left floating or pulled out.
Remove the 74HC32 chip from U3.
Make a wire jumper from pin 2 on U3 socket to pin 3. This will
make a direct connection from the RAM-CS signal to
RAM-MSB-CS. Chip enable (CE) on pin 22 will have a direct
connection to chip select header W11.
Select CSP0 by shunting W11-8 between pin 2 and pin 3. CSP0
is enabled from reset and should be used to test the application
program properly.
Insert RAM chip in socket U6B. Notice that U6A does not have
address line 0 routed, and it is used for expanded wide mode. On
the other hand, U6B does have address line 0 routed directly and
is designed for the use of expanded narrow mode.
When memory paging is enabled, the EVB includes the footprint
for a 28- and 32-pin RAM footprint. Address lines 16 and 18 are
hardwired to U6B. However, address line 17 needs to be
configured via jumper header W12 by shunting pin 3 and pin 4.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關PDF資料 |
PDF描述 |
|---|---|
| M68HC12B | Microcontrollers |
| M68HC705UGANG | High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| M68TC11E20B56 | HC11 Microcontrollers |
| M68Z128W-70N1T | 3V, 1 Mbit 128Kb x8 Low Power SRAM with Output Enable |
| M68Z128WN | 3V, 1 Mbit 128Kb x8 Low Power SRAM with Output Enable |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M68HC12B | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| M68HC16Y1CFC | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-Bit Modular Microcontroller |
| M68HC705UGANG | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| M68HC705UPGMR | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| M68HC705X16PGMR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。