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PDF SC9321 Data sheet ( Hoja de datos )
| Número de pieza | SC9321 | |
| Descripción | AUDIO SYSTEM CONTROL MCU | |
| Fabricantes | Silan Microelectronics | |
| Logotipo |  |
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SC9321
AUDIO SYSTEM CONTROL MCU WITH DTS PLL
DESCRIPTION
SC9321 is an audio system controller which realizes the AM/FM tune
receiver (DTS) and other functions. It is based on Silan’s 8-bit MCU
SC65PX and can be operating under low voltage. Built-in LCD driver
which can drive max. 4X23 segments display; 44 configurable I/O
ports; three 8-bit counters, where two of them can be together to
implement 16-bit timing length, and another timer is equipped with
input capture functions; Built-in real time clock ensures the system
continuously counting when it is in sleep state; 9 interrupt sources
including four external interrupts, which makes the system response to
various internal or external events quickly. The serial communication
circuit with selectable multiple operating modes enhanced the
expansibility of the system. Built-in 3.2MHz RC oscillator with external
75KHz oscillator can make a balance between power dissipation and
speed. In high speed application, it can extend external high frequency
oscillator through PC.4/5 pin, maximum up to 8MHz.
The chip can be widely applicable in portable audio control system
with LCD display.
LQFP-64-10x10-0.5
APPLICATIONS
* Widely applied in portable audio
control system with LCD.
ORDERING INFORMATION
Device
SC9321
Package
LQFP-64-10x10-0.5
Seal
SC9321P
FEATURES
* Memory
384-byte data memory
8K-byte (OTP)+ 8K-byte(ROM)
* I/O configuration
General-purpose I/O: 21 pins with pull up resistor;
SEG: also can be used as I/O.
* LCD controller/driver
Drive 11 words display max.
23 SEG x 4 COM
Display mode: duty, bias can be programmable
* 8 –bit timer/counter T0/T1/T2
Timing time can be set by program
External events counting
Arbitrary clock frequency output
T0/T1 can be 16-bit counter
T2 provides input capture function
* Clock source
External clock source: 75KHz oscillator
Built-in RC oscillator: 3.2MHz
Extension oscillator: 2~8MHz(VDD>2.4V@4MHz)
* RTC
Year/month/day display
Provide BCD code data directly
Leap year auto adjust
Timing alarm
* PLL frequency synthesizer
FM/AM
FM frequency range: 30MHz~150MHz
AM frequency range: 0.5MHz~30MHz
* 16-bit IF counter
AMIF range: 100KHz~1MHz
FMIF range: 5MHz~15MHz
AMIF&FMIF share one IF input IFIN
HANGZHOU MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2008.02.21
Page 1 of 16
This datasheet has been downloaded from http://www.digchip.com at this page
1 page  
SC9321
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Pin Name
SEG19
SEG20
SEG21
SEG22
PA.0
PA.1
PA.2
PA.3
PA.4
PA.5
PA.6
PA.7
PB.0
PB.1
PB.2
PB.3
PB.4
PB.5
PC.0
PC.1
PC.2
PC.3
RESET
GND
XIN
XOUT
VDD
PC.4
PC.5
PC.6
TEST
FM
AM
AVSS
IFIN
VSSEO
Diplex pin
I/O
PG.3
PG.4
PG.5
I/O
PG.6
INT0
INT1
INT2
INT3
TCL0
TCL1
CAPIN
BUZ
I/O
KS0
KS1
KS2
KS3
TCLO0
TCLO1
ADC0
I/O
ADC1
ADC2
AD conversion
analog channel
ADC3
VPP －
－－
－I
－O
－－
ADC4
ADC5
External
I/O
reference
voltage
－－
－I
－O
－－
AMIF/
FMIF
I
－－
Pin Descriptions
Segments scan signal output, maximum output 4-bit
data each pin.
Drive LCD screen together with COM signal.
Can be as general-purpose input/output port.
General-purpose input/output port;
8bit read/write;
Configurable bit operation.
System reset pin
Digital ground
Low frequency oscillator input
Low frequency oscillator output
Digital power supply
PC4/5 can also be used as ADC input channel;
PC6 can also be used as external reference input of
ADC
Test enable pin, internal pull-down resistor
FM signal input
AM signal output
Analog ground
IF signal input
Analog ground
(To be continued)
HANGZHOU MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2008.02.21
Page 5 of 16
5 Page 
SC9321
Interrupt Control
SC65PX supports two kinds of interrupts: Non-maskable interrupt NMI; maskable interrupt IRQ. Where PRI of
non-maskable interrupt NMI is higher than maskable interrupt IRQ. However, this circuit does not implement NMI
interrupt.
1. Maskable interrupts
SC9321 has 9 maskable interrupts in total without PRI; Setting IRQIP register to determine if the interrupt is
enable. All the maskable interrupts use the same entry address FFF8H.
2. Non-maskable interrupts(reserved)
Non-maskable interrupt NMI, high active. Entry address is FFFCH/FFFDH. This circuit does not implement
NMI function. There is no need to set NMIIP and NMIDP registers.
3. External interrupts
SC9321 has 4 external interrupts ExtInt0～3, input through PA port 0～3. Where ExtInt2 and key interrupt
KSINT share one interrupt source corresponding to IRQDP.6. ExtInt3 and IF interrupt IRQIFC share one interrupt
source, corresponding to IRQDP.7. In addition, RTC and Timer2 share one interrupt source.
Watchdog Timer
Watchdog timer adopts independent counter. Watchdog (WDT) is mainly used for program monitor, after
counting overflows, generates reset signal to avoid endless loop or other error execution state. When 75K crystal
oscillator is operating, the longest overflow time is 873.6ms.
System Power Control
SC9321 optimizes the design for low power dissipation requirements of 3V supply voltage. The system
designer can flexibly make the system meet the requirements and reduce the power dissipation according to the
operating conditions.
Module configuration includes voltage reference, RC oscillator, charge pump, voltage regulator and power
switching circuit. The structure is as follows:
HANGZHOU MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2008.02.21
Page 11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet SC9321.PDF ] | |
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