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参数资料
| 型号： | SPL10A1 |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 7.5KB LCD CONTROLLER/DRIVER |
| 中文描述： | 7.5KB LCD控制器/驱动 |
| 文件页数： | 6/24页 |
| 文件大小： | 279K |
| 代理商： | SPL10A1 |
SPL10A1
6
The clock source of the timer/counter are selectable as the following:
TIMER/COUNTER
TM0
12 BIT TIMER
ADDR.
$0014
$001C
$0014
$001C
$000B
$001C
CLOCK SOURCE
CPU CLOCK (T) or T/4
12 BIT COUNTER
T/128, T/256, T/2048 or EXT CLK
MODE SELECT REGISTER
TIMER CLOCK SELECTOR
Select TM0 timer or counter
Select T or T/4
INTERRUPTS
The SPL10A1 has six interrupt sources. They are INT0 ( interrupt fromTIMER 0 ), 2 KHz
INT, LCDL INT (LCD service in share mode, due to LCD registers is shared with the
TIMER/COUNTER ), 128 Hz INT, EXT INT ( external INTERRUPT from IOCD1 ), 2 Hz
INT. The 2KHz INT, LCDL INT (256 Hz in 1/3, 1/4 bias;128 Hz in 128 Hz), 128 Hz INT,
2Hz INT, all are divided from 32768 Hz Crystal Oscillator.
AUDIO (MELODY/SPEECH) / TONE OUTPUT
The SPL10A1 provides both speech and single tone melody output in current DA type
that can drive SPEAKER through transistor. Also, the SPL10A1 provides TONE output
that can directly drive BUZZER. The two modes, current DA and tone, share the same
AUD pin. In current DA mode, it should smoothly switch current DA output current to zero
by using speech mode to reduce noise to turn off current DA. The current DA should be
turned off when not used due to the current consumption. The TONE output is a full-swing
(VDD and VSS) signal and its frequency source is the frequency of TIMER Carry divided
by 2.
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