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參數(shù)資料
| 型號(hào)： | EPVP6810 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | VFD Controller |
| 中文描述： | 變頻控制器 |
| 文件頁數(shù)： | 35/50頁 |
| 文件大?。?/td> | 343K |
| 代理商： | EPVP6810 |
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ePVP6810
VFD Controller
This specification is subject to change without further notice.
11.28.2004 (V1.23)
29 of 50
3
The register initial sets to suggest
The IOC page 0 & page 1 0X0C register initial sets suggestion as follows
0x0C register value = 0B0000xxxx
The R page 0 0X0C register initial sets suggestion as follows
0x0C register value =0B0000xxxx
7.5 I/O Port
The I/O registers are bi-directional tri-state I/O ports. The I/O ports can be defined as "input"
or "output" pins by the I/O control registers under program control. The I/O data registers and
I/O control registers are both readable and writable. The I/O interface circuit is shown in Fig.7.
PCRD
M
U
X
0
1
PDRD
PDWR
CLK
C
L
P
R
D
Q
Q
CLK
C
L
P
R
D
Q
Q
PCWR
IOD
PORT
Fig. 7 The Circuit of I/O Port and I/O Control Register
7.6 RESET
A RESET can be caused by any of the following
:
1. Power on reset
2. WDT timeout (if enabled and in GREEN or NORMAL mode)
3. /RESET pin pull low
Once a RESET occurs, the following functions are performed.
The oscillator is running, or will be started.
The Program Counter (R2) is set to all "0".
When power on, the upper 3 bits of R3 and the upper 2 bits of R4 are cleared.
The Watchdog timer and prescaler counter are cleared.
The Watchdog timer is disabled.
The CONT register is set to all "1"
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