S27KL0641/S27KS0641
S70KL1281/S70KS1281
3.0 V/1.8 V, 64 Mb (8 MB)/128 Mb (16 MB),
HyperRAM™ Self-Refresh DRAM
Distinctive Characteristics
HyperRAM™ Low Signal Count Interface
■ 3.0 V I/O, 11 bus signals
❐ Single ended clock (CK)
■ 1.8 V I/O, 12 bus signals
❐ Differential clock (CK, CK#)
■ Chip Select (CS#)
■ 8-bit data bus (DQ[7:0])
■ Read-Write Data Strobe (RWDS)
❐ Bidirectional Data Strobe / Mask
❐ Output at the start of all transactions to indicate refresh la-
tency
❐ Output during read transactions as Read Data Strobe
❐ Input during write transactions as Write Data Mask
■ RWDS DCARS Timing
❐ During read transactions RWDS is offset by a second clock,
phase shifted from CK
❐ The Phase Shifted Clock is used to move the RWDS transi-
tion edge within the read data eye
High Performance
■ Up to 333 MBps
■ Double-Data Rate (DDR) - two data transfers per clock
■ 166 MHz clock rate (333 MBps) at 1.8 V VCC
■ 100 MHz clock rate (200 MBps) at 3.0 V VCC
■ Sequential burst transactions
■ Configurable Burst Characteristics
❐ Wrapped burst lengths:
• 16 bytes (8 clocks)
• 32 bytes (16 clocks)
• 64 bytes (32 clocks)
• 128 bytes (64 clocks)
❐ Linear burst
❐ Hybrid option - one wrapped burst followed by linear burst
❐ Wrapped or linear burst type selected in each transaction
❐ Configurable output drive strength
■ Low Power Modes
❐ Deep Power Down
■ Package
❐ 24-ball FBGA
Performance Summary
Maximum Clock Rate at 1.8 V VCC/VCCQ
Maximum Clock Rate at 3.0 V VCC/VCCQ
Maximum Access Time, (tACC at 166 MHz)
Maximum CS# Access Time to first word at
166 MHz (excluding refresh latency)
Read Transaction Timings
166 MHz
100 MHz
36 ns
56 ns
Maximum Current Consumption
Burst Read or Write (linear burst at 166 MHz, 1.8 V)
Power On Reset
Standby (CS# = HIGH, 3.0 V, 105 °C)
Deep Power Down (CS# = HIGH, 3.0 V, 105 °C)
Standby (CS# = HIGH, 1.8 V, 105 °C)
Deep Power Down (CS# = HIGH, 1.8 V, 105 °C)
64 MB
60 mA
50 mA
300 µA
40 µA
300 µA
20 µA
128 MB
72 mA
100 mA
600 µA
N/A
600 µA
N/A
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-97964 Rev. *L
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 31, 2018
