BU38803
BU38803 is System control servo manufactured by ROHM.
Features
- 1) CPU 499 mands (69 types) Memory-mapped I / O Minimum mand 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 Pattern generator: 1 Watch-dog timer: 1 External interrupts: 1 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 17 bits from FRC MSB used. Output Internal: 3 bit External (PO): 5 bit External (PIO): 6 bit 8) Programmable pre-scaler CFG: 7 bit CTL: 6 bit
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 14) Synchronous serial input/output: 8 bit × 1 15) VH PULSE V separeted from posite synchronous snal. Pseudo V generated from pattern generator output. Superimposed pseudo H synchronized with the posite synchronous signal. 16) VISS / VASS VASS 0 / 1 discrimination VISS discrimination threshold: 3 Aspect discrimination. D / A CTL switching. 17) Standard I / O Parallel I / O (PIO): 32 bit 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 Setting period: 4 20) Linear circuits DFG: amplifier / parator CFG: amplifier / parator CTL: differential amplifier / parator DPG: parator
Video ICs
BU38603 / BU38703 / BU38803
- Absolute maximum ratings (Ta = 25°C)
Parameter Applied voltage Pin applied voltage Power dissipation Storage temperature range Symbol VDD, VDDA, VDAD VIN Pd Tstg Limits 0.3 ~ 7.0∗2 VSS
- 0.3 ~ VDD + 0.3 500∗1
- 55 ~ + 125 Unit V V m W °C
∗1 Reduced by 5m W for each increase in Ta of 1°C over 25°C. ∗2 Use with VSS = VSSA = VSAD, and VDD = VDDA = VDAD.
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