1
Features
Programmable 16,777,216 x 1-bit Serial Memories Designed to Store Configuration
Programs for Field Programmable Gate Arrays (FPGAs)
3.3V Output Capability
5V Tolerant I/O Pins
Program Support using the Atmel ATDH2200E System or Industry Third Party
Programmers
In-System Programmable (ISP) via 2-wire Bus
Simple Interface to SRAM FPGAs
Compatible with Atmel AT40K and AT94K Devices, Altera FLEX
, APEX
TM
Devices,
Lucent ORCA
FPGAs, Xilinx XC3000
TM
, XC4000
TM
, XC5200
TM
, Spartan
, Virtex
FPGAs,
Motorola MPA1000 FPGAs
Cascadable Read-back to Support Additional Configurations or Higher-density Arrays
Low-power CMOS FLASH Process
Available in 6 mm x 6 mm x 1 mm 8-lead LAP (Pin-compatible with 8-lead SOIC/VOIC
Footprint Packages), 20-lead PLCC, 44-lead PLCC and 44-lead TQFP Packages
Emulation of Atmel's AT24CXXX Serial EEPROMs
Low-power Standby Mode
Single Device Capable of Holding 4 Bit Stream Files Allowing Simple System
Reconfiguration
Fast Serial Download Speeds up to 33 MHz
Endurance: 10,000 Write Cycles Typical
Description
The AT17F Series of In-System Programmable Configuration PROMs (Configurators)
provide an easy-to-use, cost-effective configuration memory for Field Programmable
Gate Arrays. The AT17F Series device is packaged in the 8-lead LAP, 20-lead PLCC,
44-lead PLCC and 44-lead TQFP, see Table 1. The AT17F Series Configurator uses a
simple serial-access procedure to configure one or more FPGA devices.
The AT17F Series Configurators can be programmed with industry-standard program-
mers, Atmel's ATDH2200E Programming Kit or Atmel's ATDH2225 ISP Cable.
Table 1. AT17F Series Packages
Package
AT17F16
8-lead LAP
Yes
20-lead PLCC
Yes
44-lead PLCC
Yes
44-lead TQFP
Yes
FPGA
Configuration
Flash Memory
AT17F16
Advance
Information
Rev. 3392ACNFG10/03
4
AT17F16
3392ACNFG10/03
Block Diagram
Device Description
The control signals for the configuration memory device (CE, RESET/OE and CLK)
interface directly with the FPGA device control signals. All FPGA devices can control the
entire configuration process and retrieve data from the configuration device without
requiring an external intelligent controller.
The RESET/OE and CE pins control the tri-state buffer on the DATA output pin and
enable the address counter. When RESET/OE is driven Low, the configuration device
resets its address counter and tri-states its DATA pin. The CE pin also controls the out-
put of the AT17F Series Configurator. If CE is held High after the RESET/OE reset
pulse, the counter is disabled and the DATA output pin is tri-stated. When OE is subse-
quently driven High, the counter and the DATA output pin are enabled. When
RESET/OE is driven Low again, the address counter is reset and the DATA output pin is
tri-stated, regardless of the state of CE.
When the configurator has driven out all of its data and CEO is driven Low, the device
tri-states the DATA pin to avoid contention with other configurators. Upon power-up, the
address counter is automatically reset.
Config. Page
Select
Power-on
Reset
Flash
Memory
Clock/Oscillator
Logic
2-wire Serial Programming
Serial Download Logic
Control Logic
CLK
CEO(A2)
DATA
CE
RESET/OE
SER_EN
CE/WE/OE
Data
Address
READY
PAGE_EN
PAGESEL0
PAGESEL1
Reset
5
AT17F16
3392ACNFG10/03
DATA
(1)
Three-state DATA output for configuration. Open-collector bi-directional pin for
programming.
CLK
(1)
Clock input. Used to increment the internal address and bit counter for reading and
programming.
PAGE_EN
(2)
Input used to enable page download mode. When PAGE_EN is high the configuration
download address space is partitioned into 4 equal pages. This gives users the ability to
easily store and retrieve multiple configuration bitstreams from a single configuration
device. This input works in conjunction with the PAGESEL inputs. PAGE_EN must be
remain low if paging is not desired. When SER_EN is Low (ISP mode) this pin has no
effect.
Notes: 1. This pin has an internal 20 K
pull-up resistor.
2. This pin has an internal 30 K
pull-down resistor.
Pin Description
Name
I/O
AT17F16
8
LAP
20
PLCC
44
PLCC
44
TQFP
DATA
I/O
1
2
2
40
CLK
I
2
4
5
43
PAGE_EN
I
16
1
39
PAGESEL0
I
11
20
14
PAGESEL1
I
7
25
19
RESET/OE
I
3
6
19
13
CE
I
4
8
21
15
GND
5
10
24
18
CEO
O
6
14
27
21
A2
I
READY
O
15
29
23
SER_EN
I
7
17
41
35
V
CC
8
20
44
38
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