R6532P RAM I/O Timer 5V 200mA IC DIP-40
The R6532P is a versatile integrated circuit that combines static RAM, input/output ports, and a programmable timer into a single chip. Originally designed to work with 6500-series microprocessors, this IC reduces system complexity by integrating several essential peripheral functions within one device. It is widely used in early microcomputer systems, industrial controllers, and embedded electronics that require simple memory and I/O expansion.
The chip typically contains 128 bytes of static RAM, two 8-bit bidirectional I/O ports, and an internal programmable interval timer. These features allow a microprocessor to store temporary data, communicate with external devices, and generate precise timing events. Packaged in a 40-pin DIP, the R6532P is easy to mount on through-hole PCBs and is often used in retro computing projects, system repairs, and educational demonstrations of classic microprocessor architectures.
Features:
- Integrated RAM, I/O ports, and programmable timer in one IC.
- Compatible with 6500-series microprocessor systems.
- Two programmable 8-bit bidirectional I/O ports.
- Built-in interval timer for system timing control.
- Internal static RAM for temporary data storage.
- Reduces external component count in microprocessor systems.
- Suitable for embedded control and legacy computer designs.
- Through-hole DIP package for easy PCB installation.
Specifications:
| Parameter | Symbol | Min | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Input High Voltage | VIH | 2.4 | VCC | V | |
| Input Low Voltage | VIL | 0 | 0.4 | V | |
| Input Leakage Current (A0-A6, RS, R/W, RES, Ø2, CS1, CS2) | IIN | — | 2.5 | μA | VIN=5.25V VCC=0V |
| Input Leakage Current for Three-State Off D0-D7 | ITSI | — | ±10 | μA | VIN=0.4V to 2.4V |
| Input High Current (PA0-PA7, PB0-PB7) | IIH | -100 | — | μA | VIH=2.4V |
| Input Low Current (PA0-PA7, PB0-PB7) | IIL | — | -1.6 | mA | VIN=0.4V |
| Output High Voltage (PA0-PA7, PB0-PB7 TTL drive, D0-D7) | VOH | 2.4 | — | V | VCC=4.75V |
| Output High Voltage (PB0-PB7 Darlington drive) | VOH | 1.5 | — | V | ILOAD=3 mA |
| Output Low Voltage (D0-D7) | VOL | — | 0.4 | V | VCC=4.75V ILOAD=1.6 mA |
| Output High Current (Sourcing) (PA0-PA7, PB0-PB7 TTL drive, D0-D7) | IOH | -100 | — | μA | VOH=2.4V |
| Output High Current (Sourcing) (PB0-PB7 Darlington drive) | IOH | -3.0 | — | mA | VOH=1.5V |
| Output Low Current (Sinking) (PA0-PA7, PB0-PB7) | IOL | 1.6 | — | mA | VOL=0.4V |
| Input Capacitance (Ø2) | CCLK | — | 30 | pF | VCC=5.0V VIN=0V f=1 MHz |
| Input Capacitance (Other) | CIN | — | 10 | pF | TA=25∘C |
| Output Capacitance | COUT | — | 10 | pF | |
| Power Dissipation | PD | — | 1000 | mW | TA=0∘C |
Pinout:
| Pin No. | Pin Name | Pin No. | Pin Name |
|---|---|---|---|
| 1 | VSS | 40 | A6 |
| 2 | A5 | 39 | φ2 |
| 3 | A4 | 38 | CS1 |
| 4 | A3 | 37 | CS2 |
| 5 | A2 | 36 | RS |
| 6 | A1 | 35 | R/W |
| 7 | A0 | 34 | RES |
| 8 | PA0 | 33 | D0 |
| 9 | PA1 | 32 | D1 |
| 10 | PA2 | 31 | D2 |
| 11 | PA3 | 30 | D3 |
| 12 | PA4 | 29 | D4 |
| 13 | PA5 | 28 | D5 |
| 14 | PA6 | 27 | D6 |
| 15 | PA7 | 26 | D7 |
| 16 | PB7 | 25 | IRQ |
| 17 | PB6 | 24 | PB0 |
| 18 | PB5 | 23 | PB1 |
| 19 | PB4 | 22 | PB2 |
| 20 | VCC | 21 | PB3 |
Applications:
- 6500-series microprocessor systems.
- Embedded control systems.
- Industrial control electronics.
- Legacy computer repair and restoration.
- Educational microprocessor training kits.
- Data acquisition and control circuits.
Package Included:
- 1x R6532P RAM I/O Timer 5V 200mA IC DIP-40.
Reviews
There are no reviews yet.