Selects from distinct wave patterns (e.g., fade-out, attack-decay, triangular loops).
| Parameter | Min | Typ | Max | Unit | |----------------------|------|-----|------|------| | Supply Voltage (VCC) | 4.75 | 5.0 | 5.25 | V | | Supply Current (ICC) | - | 15 | 30 | mA | | Clock Frequency | 0.5 | 1.0 | 2.0 | MHz | | Input Low Voltage (VIL) | 0 | - | 0.8 | V | | Input High Voltage (VIH) | 2.0 | - | VCC | V | | Output Low Voltage (VOL @ 1.6mA) | - | 0.4 | 0.5 | V | | Output High Voltage (VOH @ -0.4mA) | 2.4 | - | - | V |
Active-low input that clears all internal registers to zero. VCC / VSS: +5V Power supply and Ground pins. The 16 Control Registers kc89c72 datasheet
(I/O Port Data Storage) : Standard 8-bit target registers used to read or write data to the external parallel I/O lines. Pinout Configuration & Hardware Interfacing
No Connection (or internal connection depending on die variant) Analog Channel B Audio Output for Channel B 4 Analog Channel A Audio Output for Channel A 5 No Connection 6 I/O Port B, Bit 7 7 I/O Port B, Bit 6 8 I/O Port B, Bit 5 9 I/O Port B, Bit 4 10 I/O Port B, Bit 3 11 I/O Port B, Bit 2 12 I/O Port B, Bit 1 13 I/O Port B, Bit 0 14 I/O Port A, Bit 7 15 I/O Port A, Bit 6 16 I/O Port A, Bit 5 17 I/O Port A, Bit 4 18 I/O Port A, Bit 3 19 I/O Port A, Bit 2 20 I/O Port A, Bit 1 21 I/O Port A, Bit 0 22 Master timing input (1 - 2 MHz square wave) 23 Internal testing pin (leave disconnected) 24 Chip Select (active low) 25 Bus Control 2 26 Main 5V Power Supply Input 27 Bus Direction Control Line 28 Bus Control 1 29 Control configuration pin 30 Bidirectional Data Bus, Bit 7 31 Bidirectional Data Bus, Bit 6 32 Bidirectional Data Bus, Bit 5 33 Bidirectional Data Bus, Bit 4 34 Bidirectional Data Bus, Bit 3 35 Bidirectional Data Bus, Bit 2 36 Bidirectional Data Bus, Bit 1 37 Bidirectional Data Bus, Bit 0 38 Analog Channel C Audio Output for Channel C 39 Internal testing pin (leave disconnected) 40 Master System Reset (Active Low) 3. Internal Architecture & Register Map Selects from distinct wave patterns (e
: Configure the independent volumes (amplitude) of channels A, B, and C. Setting bit 4 to high routes the channel volume control to the internal Envelope Generator.
At the heart of the KC89C72 is an optimized 8-bit Harvard architecture CPU. This means it features separate bus structures for instruction fetching and data access, maximizing throughput by allowing simultaneous program execution and data manipulation. Key Specifications: The 16 Control Registers (I/O Port Data Storage)
The internal structure of the KC89C72 can be broken down into specific operational modules. These modules process data written by a host CPU to generate complex audio waveforms, sound effects, or pseudo-random noise.
: Includes a sophisticated envelope generator with multiple shapes (attack, decay, sustain, release) to modulate the amplitude of the sound channels.
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