Cypress CYDC064B08, CYDC064B16, CYDC128B08, CYDC128B16, CYDC256B16 Switching Characteristics for VCC = 3.0V Over the Operating Range (continued)

CYDC256B16, CYDC128B16,

CYDC064B16, CYDC128B08,

CYDC064B08

Document #: 001-01638 Rev. *E Page 17 of 26

tHZWE[30, 31] R/W LOW to High Z 15 25 ns

tLZWE[30, 31] R/W HIGH to Low Z 0 0 ns

tWDD[32] Write Pulse to Data Delay 55 80 ns

tDDD[32] Write Data Valid to Read Data Valid 55 80 ns

Busy Timing[33]

tBLA BUSY LOW from Address Match 30 45 ns

tBHA BUSY HIGH from Address Mismatch 30 45 ns

tBLC BUSY LOW from CE LOW 30 45 ns

tBHC BUSY HIGH from CE HIGH 30 45 ns

tPS[34] Port Set-up for Priority 5 5 ns

tWB R/W HIGH after BUSY (Slave) 0 0 ns

tWH R/W HIGH after BUSY HIGH (Slave) 20 35 ns

tBDD[35] BUSY HIGH to Data Valid 30 40 ns

Interrupt Timing[33]

tINS INT Set Time 35 45 ns

tINR INT Reset Time 35 45 ns

Semaphore Timing

tSOP SEM Flag Update Pulse (OE or SEM)10 15 ns

tSWRD SEM Flag Write to Read Time 10 10 ns

tSPS SEM Flag Contention Window 10 10 ns

tSAA SEM Address Access Time 40 55 ns

Switching Characteristics for VCC = 3.0V Over the Operating Range (continued)

Parameter Description

CYDC256B16,

CYDC128B16,

CYDC064B16,

CYDC128B08,

CYDC064B08

CYDC256B16,

CYDC128B16,

CYDC064B16,

CYDC128B08,

CYDC064B08 Unit

-40 -55

Min. Max. Min. Max.

[+] Feedback

Contents

Main 1.8V 4k/8k/16k x 16 and 8k/16k x 8 ConsuMoBL Dual-Port Static RAM CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, Features Selection Guide for VCC = 1.8V Selection Guide for VCC = 2.5V CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, Document #: 001-01638 Rev. *E Page 2 of 26 Figure 1. Top Level Block Diagram Document #: 001-01638 Rev. *E Page 3 of 26 Pin Configurations CYDC064B16 CYDC128B16 CYDC256B16 CYDC064B16, CYDC128B08, CYDC064B08 Pin Configurations CYDC128B08 CYDC064B08 100-pin TQFP (Top View) CYDC256B16, CYDC128B16, Functional Description Pin Definitions CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, CYDC064B08 Architecture CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, CYDC064B08 Maximum Ratings Operating Range Electrical Characteristics for VCC = 1.8V Over the Operating Range Electrical Characteristics for VCC = 1.8V (continued) Over the Operating Range Electrical Characteristics for VCC = 2.5V Over the Operating Range CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, Electrical Characteristics for 3.0V Capacitance AC Test Loads and Waveforms Switching Characteristics for VCC = 1.8V Over the Operating Range[27] Switching Characteristics for VCC = 1.8V Over the Operating Range[27] (continued) Switching Characteristics for VCC = 2.5V Over the Operating Range CYDC256B16, CYDC128B16, CYDC064B16, CYDC128B08, Switching Characteristics for VCC = 3.0V Over the Operating Range Switching Characteristics for VCC = 2.5V Over the Operating Range (continued) Switching Characteristics for VCC = 3.0V Over the Operating Range (continued) Switching Waveforms Read Cycle No.1 (Either Port Address Access) Read Cycle No.2 (Either Port CE/OE Access)[36, 39, 40] Read Cycle No. 3 (Either Port) Write Cycle No.1: R/W Controlled Timing[41, 42, 43, 44, 45, 46] Write Cycle No. 2: CE Controlled Timing[41, 42, 43, 48] Semaphore Read After Write Timing, Either Side Timing Diagram of Semaphore Contention Timing Diagram of Read with BUSY (M/S=HIGH)[53] Write Timing with Busy Input (M/S = LOW) Busy Timing Diagram No.1 (CE Arbitration) CER Valid First Right Address Valid First Busy Timing Diagram No.2 (Address Arbitration) CEL Valid First[54] Interrupt Timing Diagrams Right Side Sets INTL: Right Side Clears INTR: Left Side Sets INTR: Ordering Information Page Document History Page