XCF32PFS48C Xilinx Inc, XCF32PFS48C Datasheet - Page 11

• Manufacturer Part Number: XCF32PFS48C
• Description: IC PROM SRL 1.8V 32M 48CSBGA
• Manufacturer: Xilinx Inc

Specifications of XCF32PFS48C

• Programmable Type: In System Programmable
• Memory Size: 32Mb
• Voltage - Supply: 1.65 V ~ 2 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-BFBGA, CSPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Reset and Power-On Reset Activation
At power up, the device requires the V
monotonically rise to the nominal operating voltage within
the specified V
meet this requirement, then the device might not perform
power-on reset properly. During the power-up sequence,
OE/RESET is held Low by the PROM. Once the required
supplies have reached their respective POR (Power On
Reset) thresholds, the OE/RESET release is delayed (T
minimum) to allow more margin for the power supplies to
stabilize before initiating configuration. The OE/RESET pin
is connected to an external 4.7 kΩ pull-up resistor and also
to the target FPGA's INIT pin. For systems utilizing slow-
rising power supplies, an additional power monitoring circuit
can be used to delay the target configuration until the
system power reaches minimum operating voltages by
holding the OE/RESET pin Low. When OE/RESET is
released, the FPGA’s INIT pin is pulled High allowing the
FPGA's configuration sequence to begin. If the power drops
X-Ref Target - Figure 6
I/O Input Voltage Tolerance and Power Sequencing
The I/Os on each re-programmable Platform Flash PROM
are fully 3.3V-tolerant. This allows 3V CMOS signals to
connect directly to the inputs without damage. The core
power supply (V
output power supply (V
signals can be applied in any order.
Additionally, for the XCFxxS PROM only, when V
supplied at 2.5V or 3.3V and V
I/Os are 5V-tolerant. This allows 5V CMOS signals to
connect directly to the inputs on a powered XCFxxS PROM
without damage. Failure to power the PROM correctly while
supplying a 5V input signal can result in damage to the
XCFxxS device.
DS123 (v2.18) May 19, 2010
Product Specification
200 µs ramp
V
CCINT
V
V
R
CCPOR
CCPD
CCINT
CCINT
rise time. If the power supply cannot
), JTAG pin power supply (V
CCO
), and external 3V CMOS I/O
CCINT
Figure 6: Platform Flash PROM Power-Up Requirements
T
OER
is supplied at 3.3V, the
CCINT
Recommended Operating Range
Delay or Restart
Configuration
power supply to
CCO
CCJ
),
is
www.xilinx.com
Platform Flash In-System Programmable Configuration PROMs
OER
T
OER
below the power-down threshold (V
and OE/RESET is again held Low until the after the POR
threshold is reached. OE/RESET polarity is not
programmable. These power-up requirements are shown
graphically in
For a fully powered Platform Flash PROM, a reset occurs
whenever OE/RESET is asserted (Low) or CE is deasserted
(High). The address counter is reset, CEO is driven High, and
the remaining outputs are placed in a high-impedance state.
Note:
1. The XCFxxS PROM only requires V
2. The XCFxxP PROM requires both V
its POR threshold before releasing OE/RESET.
POR threshold and for V
operating voltage level before releasing OE/RESET.
A slow-ramping V
be below the minimum operating
voltage when OE/RESET is released.
In this case, the configuration
sequence must be delayed until both
V
recommended operating conditions.
CCINT
and V
Figure
CCO
50 ms ramp
CCINT
have reached their
6.
supply may still
CCO
to reach the recommended
CCPD
T
RST
CCINT
CCINT
), the PROM resets
TIME (ms)
ds123_21_103103
to rise above its
to rise above
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