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參數(shù)資料
| 型號： | SPL10A1 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 7.5KB LCD CONTROLLER/DRIVER |
| 中文描述： | 7.5KB LCD控制器/驅動 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大小： | 279K |
| 代理商： | SPL10A1 |
SPL10A1
5
2
. 32768Hz crystal oscillator or R oscillator (mask option) for LCD scanning and interrupt
sources (2 KHz, LCDL for LCD service,128 Hz, 2Hz). It is suggested to enable
32768Hz crystal in strong mode for a few seconds and then switch to weak mode
when reset occurs.
C1
+V
DD
Note: Length of the wiring for X32I and X32O should be as short as possible.
X32I
X32O
C2
32768Hz
32768Hz Crystal
20p
20p
X32I
R Oscillator
R
STOP CLOCK MODE
The SPL10A1 supports the power saving mode for those applications needed very low
standby current. The user can simply enable the wake-up sources then stop the CPU
clock by writing the STOP CLOCK register ($09). The CPU will go to stand-by and the
RAM and I/O remains their previous states until wake-up. There are three sources of
wake-up in this chip, PORT IOEF wake-up, TIMER 0 wake-up and 2 Hz wake-up. After
the chip being waken up, the internal CPU will go to the RESET state the RAM and I/O
are not affected by the wake-up reset. The standby current of timepiece product typically
is less than 3
μ
A@3V by using this mode and 32768Hz clock source in weak mode.
For non-timepiece products, 32768Hz crystal driver or R oscillator (mask option) that
generates the 32768Hz clock source also can be turned off, then the whole chip stops.
The standby current of the SPL10A1 is less than 1
μ
A@3V. In this mode, IOEF port can
be used to wake up this chip.
TIMER/COUNTER
The SPL10A1
contains one
12-bit timer/counter,TM0.In timer mode,TM0
is
reloadable
up-counter. When timer overflows from 0FFF to 0000, the carry signal will generate the
INTERRUPT signal if the corresponding bit is enabled in INT ENABLE register ($0D),and
the timer will be auto reloaded to the user‘s setup value and upcount again. If TM0 being
specified as a counter, the user may reset the counter by loading 0 into register $14 and
$1C. After the counter being activated, the count value can also be read from above
registers on-the-fly, the read instruction will not affect the counter's value or reset it.
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