The CY7C130 is a high-speed CMOS 1K by 8 dual-port static RAMs. Two ports are provided permitting independent access to any location in memory. The CY7C130 can be utilized as either standalone 8-bit dual-port static RAM or as a master dual-port RAM in conjunction with the CY7C140/CY7C141 slave dual-port device in systems requiring 16-bit or greater word widths. It is the solution to applications requiring shared or buffered data, such as cache memory for DSP, bit-slice, or multiprocessor designs.
Each port has independent control pins; chip enable (CE), write enable (R/W), and output-enable (OE). Two flags are provided on each port, BUSY and INT. BUSY signals that the port is trying to access the same location currently being accessed by the other port. INT is an interrupt flag indicating that data has been placed in a unique location (3FF for the left port and 3FE for the right port). An automatic power-down feature is controlled independently on each port by the chip to enable (CE) pins.
CY7C130 Pinout
CY7C130 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 16-23 | I/O OL – I/O 7L | Data Inputs/Outputs Pins |
| 25-32 | 1/O 0R-I/O 7R | Address Inputs/Outputs |
| 33-42 | A9R-A0R | Address RESET Pins |
| 6-15 | A0L-A9L | Address Latch Pins |
| 1 | CE’ L | Chip Latch Enable Pin |
| 2 | R/WL | Read Write Latch Pin |
| 3 | BUSY’ L | Busy Latch Pin |
| 5 | OE’ L | Output Enable Pin |
| 24 | GND | Ground Pin |
| 48 | VCC | Power Supply |
| 43 | OE’ R | Output Enable Reset Pin |
| 44 | INT’ R | Interrupt Reset Pin |
| 45 | BUSY’R | Busy Reset Pin |
| 46 | R/WR’ | Read/Write Pin |
| 47 | CE’ R | Chip Enable Reset Pin |
| 18 | VCC | Power Supply Pin |
CY7C130 Key Feature
- True Dual-Ported memory cells which allow simultaneous reads of the same memory location
- 1K x 8 organization
- 0.65-micron CMOS for optimum speed/power
- High-speed access: 15 ns
- Low operating power: ICC = 90 mA (max.)
- Fully asynchronous operation
- Automatic power-down
- Master CY7C130/CY7C131 easily expands data buswidth to 16 or more bits using slave CY7C140/CY7C141
- BUSY output flag on CY7C130/CY7C131; BUSY input on CY7C140/CY7C141
- INT flag for port-to-port communication
You can download this datasheet for CY7C130 1Kx8 CMOS Dual Port SRAM 30ns – Datasheet from the link given below:
