iCE65L08F-LCB132C Lattice, iCE65L08F-LCB132C Datasheet - Page 17
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iCE65L08F-LCB132C
Manufacturer Part Number
iCE65L08F-LCB132C
Description
FPGA - Field Programmable Gate Array iCE65 7680 LUTs, 1.0 1.2V Ultra Low-Power
Manufacturer
Lattice
Datasheet
1.ICE65L04F-TCB196C.pdf
(110 pages)
Specifications of iCE65L08F-LCB132C
Rohs
yes
Number Of Gates
7680
Number Of Logic Blocks
32
Number Of I/os
95
Maximum Operating Frequency
256 MHz
Operating Supply Voltage
1.2 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Package / Case
CBGA-132
Distributed Ram
128 Kbit
Minimum Operating Temperature
0 C
Operating Supply Current
54 uA
Factory Pack Quantity
384
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ICE65L08F-LCB132C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
Lattice Semiconductor Corporation
www.latticesemi.com
Double Data Rate (DDR) Flip-Flops
Each individual PIO pin optionally has two sets of double data rate (DDR) flip-flops; one input pair and one output
pair.
device drive the DDR output flip-flop. The D_OUT_0 signal is clocked by the rising edge of the OUTCLK signal
while the D_OUT_1 signal is clocked by the falling edge of the OUTCLK signal, assuming no optional clock polarity
inversion. Internally, the two individual flip-flops are multiplexed together before the data appears at the pad,
effectively doubling the output data rate.
Similarly,
the pad. Internally, one value is clocked by the rising edge of the INCLK signal and another value is clocked by the
falling edge of the INCLK signal. The DDR data stream is effectively de-multiplexed within the PIO pin and
presented to the programmable interconnect on D_IN_0 and D_IN_1.
The DDR flip-flops provide several design advantages. Internally within the iCE65 device, the clock frequency is
half the effective external data rate. The lower clock frequency eases internal timing, doubling the clock period, and
slashes the clock-related power in half.
Figure 12
Figure 13
demonstrates the functionality of the output DDR flip-flop. Two signals from within the iCE65
demonstrates the DDR input flip-flop functionality. A double data rate (DDR) signal arrives at
OUTCLK
D_IN_0
D_IN_1
PAD
D_OUT_1
D_OUT_0
INCLK
INCLK
OUTCLK
IOENA
PAD
IOENA
Figure 12: DDR Output Flip-Flop
Figure 13: DDR Input Flip-Flop
OE
PAD
D0
PIO
D0
D1
D0
D
EN
D
EN
D1
D0
D1
Q
Q
D0
D
EN
D
EN
0
1
D1
D0
S
Q
Q
D1
D0
D1
PIO
D0
D_IN_1
D_IN_0
PAD
D1
D0
D1
D1
(2.42, 30-MAR-2011)
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