iCE65L04F-TCB284I Lattice, iCE65L04F-TCB284I Datasheet - Page 26

• Manufacturer Part Number: iCE65L04F-TCB284I
• Description: FPGA - Field Programmable Gate Array iCE65 3520 LUTs, 1.0 1.2V Ultra Low-Power
• Manufacturer: Lattice

Specifications of iCE65L04F-TCB284I

• Rohs: yes
• Number Of Gates: 3520
• Number Of Logic Blocks: 20
• Number Of I/os: 176
• Maximum Operating Frequency: 256 MHz
• Operating Supply Voltage: 1.2 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: CBGA-284
• Distributed Ram: 80 Kbit
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 26 uA
• Factory Pack Quantity: 168

iCE65 Ultra Low-Power mobileFPGA
(2.42, 30-MAR-2012)
26
Configuration Image Size
Table 23 shows the number of memory bits required to configure an iCE65 device. Two values are provided for each
device. The “Logic Only” value indicates the minimum configuration size, the number of bits required to configure
only the logic fabric, leaving the RAM4K blocks uninitialized. The “Logic + RAM4K” column indicates the
maximum configuration size, the number of bits to configure the logic fabric and to pre-initialize all the RAM4K
blocks.
Figure 20:
No
No
No
Device Configuration Control Flow
CRESET_B = High?
SPI_SS_B = High?
CRESET_B = Low?
NVCM Enabled for
SPI Flash PROM
Configure from
Configuration?
Power-Up
CDONE = 0
CDONE = 1
Is Power-On
Reset (POR)
Released?
™
Yes
Yes
Yes
Yes
No
Family
State of SPI_SS_B
pin sampled
A device with an
unprogrammed NVCM is not
enabled for configuration.
Yes
No
After configuration ends,
pulse the CRESET_B pin
Low for 250 ns or longer to
restart configuration process
or cycle the power
iCE65 checks that all
required supply voltages
are within acceptable
range
Holding CRESET_B Low
delays the start of
configuration
Configure as SPI
Configure from
Configure from
Periphal
NVCM
NVCM
Lattice Semiconductor Corporation
www.latticesemi.com