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BU38703 PDF预览

BU38703

更新时间: 2024-10-01 22:27:59
品牌 Logo 应用领域
罗姆 - ROHM 微控制器和处理器外围集成电路时钟
页数 文件大小 规格书
7页 80K
描述
System control servo

BU38703 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFP包装说明:QFP,
针数:80Reach Compliance Code:unknown
HTS代码:8542.31.00.01风险等级:5.84
Is Samacsys:N具有ADC:YES
地址总线宽度:位大小:8
最大时钟频率:8 MHzDAC 通道:NO
DMA 通道:NO外部数据总线宽度:
JESD-30 代码:R-PQFP-G80JESD-609代码:e2
长度:20 mmI/O 线路数量:38
端子数量:80最高工作温度:75 °C
最低工作温度:-25 °CPWM 通道:YES
封装主体材料:PLASTIC/EPOXY封装代码:QFP
封装形状:RECTANGULAR封装形式:FLATPACK
峰值回流温度(摄氏度):260认证状态:Not Qualified
ROM可编程性:MROM座面最大高度:2.8 mm
速度:8 MHz最大压摆率:26 mA
最大供电电压:5.5 V最小供电电压:4.5 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL EXTENDED端子面层:TIN COPPER
端子形式:GULL WING端子节距:0.8 mm
端子位置:QUAD处于峰值回流温度下的最长时间:10
宽度:14 mmuPs/uCs/外围集成电路类型:MICROCONTROLLER
Base Number Matches:1

BU38703 数据手册

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Video ICs  
System control servo  
BU38603 / BU38703 / BU38803  
The BU38603, BU38703 and BU38803 are servo controller ICs for VCRs. They contain a high-speed, 8-bit CPU and  
perform the processing required for the drum, capstan, FV and PV completely in software, allowing a large reduction  
in the number of external components required. They also contain high-performance linear amplifiers, eliminating the  
need for interface ICs. Specialized hardware is included for items that require high-speed processing, to allow  
efficient utilization of the CPU.  
Applications  
VHS VCRs and camcorders  
Features  
1) CPU  
9) Head amplifier / chroma rotary  
Generated from pattern generator output.  
10) Built-in AGC. Five-bits used to switch the gain  
control registers for the CTL amplifier.  
11) CTL counter: 1 / 30 or 1 / 25  
12) Data shift PLL calculation: 24 bit  
13) Timer: 8 bit × 2  
499 commands (69 types)  
Memory-mapped I / O  
Minimum command execution time: 250ns (8MHz)  
2)ROM capacity  
BU38603: 16384 × 8 bit  
BU38703: 24576 × 8 bit  
BU38803: 32768 × 8 bit  
3) RAM capacity: 512 × 8bit  
4) Interrupt  
14) Synchronous serial input/output: 8 bit × 1  
15) VH PULSE  
V separeted from composite synchronous snal.  
Pseudo V generated from pattern generator  
output.  
Pattern generator: 1  
Watch-dog timer: 1  
External interrupts: 1  
Superimposed pseudo H synchronized with  
the composite synchronous signal.  
16) VISS / VASS  
FG interrupts: 5  
Internal interrupts: 7  
Two timers, serial transmission, interrupt, VHSW,  
CTL interval timer (fixed) / VISS  
Multi-layer interrupts possible.  
5) Free-running counter: 19 bit  
6) PWM output: 12 bit × 2  
7) Pattern generator  
VASS 0 / 1 discrimination  
VISS discrimination threshold: 3  
Aspect discrimination.  
D / A CTL switching.  
17) Standard I / O  
Parallel I / O (PIO): 32 bit  
17 bits from FRC MSB used.  
Output  
Parallel output (PO): 6 bit  
18) A / D converter: 8 bits × 8 channels  
Can be masked-programmed to be parallel inputs.  
19) Watch-dog timer  
Internal: 3 bit  
External (PO): 5 bit  
External (PIO): 6 bit  
Setting period: 4  
8) Programmable pre-scaler  
CFG: 7 bit  
20) Linear circuits  
DFG: amplifier / comparator  
CFG: amplifier / comparator  
CTL: differential amplifier / comparator  
DPG: comparator  
CTL: 6 bit  
1

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