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參數資料
| 型號： | LC72336 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip Microcontrollers with Built-In LCD Driver and PLL Circuits |
| 中文描述： | 單片微控制器，內置在LCD驅動和PLL電路 |
| 文件頁數： | 13/16頁 |
| 文件大?。?/td> | 185K |
| 代理商： | LC72336 |
Continued from preceding page.
No. 5157-13/16
LC72336, 72338
Pin No.
Symbol
I/O
I/O type
Function
26
25
24
23
S29/PN0/BEEP
S30/PN1
S31/PN2
S32/PN3
O
CMOS 3-value
output and
push-pull
Shared-function segment output, general-purpose output, and beep tone output port
The IOS instruction is used to switch between the segment output port and the PN0 to
PN3 functions.
The BEEP instruction is used to switch between the general-purpose output port and the
beep tone output functions.
When used for segment output:
The function can be specified in 3-bit units.
Segment output is specified with the IOS instruction (Pn = 0EH).
b2 = S29 to S32/PN0 to PN3
0 ... Segment output
1 ... PN0 to PN3 output
When used as a general-purpose output port:
The general-purpose output port function is selected with the BEEP instruction (b3 = 0).
PN1 to PN3 are dedicated general-purpose output function pins.
When used as the BEEP output pin:
Beep tone output is specified with the BEEP instruction (b3 = 1).
The frequency is specified with the BEEP instruction (b0, b1, and b2).
When the beep tone function is specified, executing an output instruction will only
overwrite the contents of the internal latch. It will have no effect on the output
whatsoever.
In clock stop mode, if this port is used as a general-purpose output port, the pins go to the
input disabled high-impedance state. If used for segment output, the pins are fixed at the
low level.
The segment output port function is selected after a power-on reset.
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