R6532P RAM I/O Timer 5V 200mA IC DIP-40

Description

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 V I N ​ = 5.25 V VCC=0V V CC ​ = 0 V Input Leakage Current for Three-State Off D0-D7 ITSI ​ — ±10 μA VIN=0.4V V I N ​ = 0.4 V to 2.4V Input High Current (PA0-PA7, PB0-PB7) IIH ​ -100 — μA VIH=2.4V V I H ​ = 2.4 V Input Low Current (PA0-PA7, PB0-PB7) IIL ​ — -1.6 mA VIN=0.4V V I N ​ = 0.4 V Output High Voltage (PA0-PA7, PB0-PB7 TTL drive, D0-D7) VOH 2.4 — V VCC=4.75V V CC ​ = 4.75 V Output High Voltage (PB0-PB7 Darlington drive) VOH ​ 1.5 — V ILOAD=3 mA I L O A D ​ = 3 m A Output Low Voltage (D0-D7) VOL ​ — 0.4 V VCC=4.75V V CC ​ = 4.75 V ILOAD=1.6 mA I L O A D ​ = 1.6 m A Output High Current (Sourcing) (PA0-PA7, PB0-PB7 TTL drive, D0-D7) IOH ​ -100 — μA VOH=2.4V V O H ​ = 2.4 V Output High Current (Sourcing) (PB0-PB7 Darlington drive) IOH ​ -3.0 — mA VOH=1.5V V O H ​ = 1.5 V Output Low Current (Sinking) (PA0-PA7, PB0-PB7) IOL ​ 1.6 — mA VOL=0.4V V O L ​ = 0.4 V Input Capacitance (Ø2) CCLK ​ — 30 pF VCC=5.0V V CC ​ = 5.0 V VIN=0V V I N ​ = 0 V f=1 MHz f = 1 M Hz Input Capacitance (Other) CIN — 10 pF TA=25∘C T A ​ = 2 5 ∘ C Output Capacitance COUT ​ — 10 pF Power Dissipation PD — 1000 mW TA=0∘C T A ​ = 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. Datasheet: R6532P.

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