FM3204-G Ramtron, FM3204-G Datasheet
FM3204-G
Specifications of FM3204-G
Related parts for FM3204-G
FM3204-G Summary of contents
Page 1
... FM3204/16/64/256 Integrated Processor Companion with Memory Features High Integration Device Replaces Multiple Parts • Serial Nonvolatile Memory • Low Voltage Reset • Watchdog Timer • Early Power-Fail Warning/NMI • Two 16-bit Event Counters • Serial Number with Write-lock for Security Processor Companion • ...
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... FM3204/16/64/256 Function Event Counter Inputs Device Select inputs Early Power-fail Output Reset Input/Output Early Power-fail Input Serial Data Serial Clock Battery-Backup Supply Supply Voltage Ground Ordering Part Number FM32256-G FM3264-G FM3216-G FM3204-G Page ...
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... VBC bit should be set. VDD Supply Supply Voltage. VSS Supply Ground Rev. 3.1 July 2010 LockOut Special Function Watchdog Registers LV Detect S/N Switched Power Nonvolatile Figure 1. Block Diagram FM3204/16/64/256 FRAM Array CNT1 Event Counters CNT2 Battery Backed <3.6V and >3.6V and no backup DD DD Page ...
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... The memory array can be write-protected by software. Two bits in the processor companion area Rev. 3.1 July 2010 FM3204/16/64/256 (WP0, WP1 in register 0Bh) control the protection setting as shown in the following table. Based on the setting, the protected addresses cannot be written and the 2-wire interface will not acknowledge any data to protected addresses ...
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... This can be accomplished by connecting the PFI pin to the unregulated power supply via a resistor divider. An application circuit is shown below. is below /RST To MCU CAL/PFO NMI input WDE Figure 5. Comparator as Early Power-Fail Warning FM3204/16/64/256 RST FM32xx Reset Switch FM32xx drives 100 ms Figure 4. Manual Reset the need for ...
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... The V will charge to the internal backup voltage which regulates itself to about 3.6V tied to 5V since the V will be exceeded µF capacitor will keep the companion functions working for about 1.5 second. FM3204/16/64/256 DD is less than 2.5V, the event DD . BAK pin can ...
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... FM3204/16/64/256 Ω series D0 Function Range Serial Number 7 FFh Serial Number 6 FFh Serial Number 5 FFh Serial Number 4 FFh Serial Number 3 FFh Serial Number 2 FFh ...
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... D3 SN.45 SN.44 SN. SN.37 SN.36 SN. SN.29 SN.28 SN. SN.21 SN.20 SN. SN.13 SN.12 SN. SN.5 SN.4 SN C2.13 C2.12 C2. C2.5 C2.4 C2 C1.13 C1.12 C1. C1.5 C1.4 C1.3 FM3204/16/64/256 SN.58 SN.57 SN. SN.50 SN.49 SN. SN.42 SN.41 SN. SN.34 SN.33 SN. SN.26 SN.25 SN. SN.18 SN.17 SN. SN.10 SN.9 SN SN.2 SN.1 SN C2.10 C2.9 C2 C2.2 C2 ...
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... Disable counter Rev. 3.1 July 2010 WP1 WP0 WP1 WP0 reset function. Nonvolatile, read/write. DD VTP1 VTP0 WDT4 WDT3 WDT4 WDT3 WDT2 WDT1 WDT0 FM3204/16/64/256 C2P C1P VBC VTP1 VTP0 WDT2 WDT1 WDT0 Page ...
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... Writing any pattern other than 1010b to WR3-0 has no effect on the timer. This allows users to clear the WTR, POR, and LB flags without affecting the watchdog timer. Write-only. 00-08h Reserved – DO NOT USE THIS ADDRESS SPACE Rev. 3.1 July 2010 WR3 < the POR bit will be set must FM3204/16/64/256 WR2 WR1 WR0 Page ...
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... NACK the last byte. If the receiver ACKs the last byte, this will cause the FM32xx to attempt to drive the bus on the next clock while the master is sending a new command such as a Stop. FM3204/16/64/256 0 Data bit Acknowledge (Transmitter) ...
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... Internally, the actual memory write occurs th after the 8 data bit is transferred. It will be complete before the Acknowledge is sent. Therefore, if the user desires to abort a write without altering the memory contents, this should be done using a Start FM3204/16/64/256 or until a new value is written. TP Page ...
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... The figures below show the proper operation for current address reads. Selective (Random) Read There is a simple technique that allows a user to select a random address location as the starting point for a read operation. This involves using the first FM3204/16/64/256 Stop A Data Byte A P Stop ...
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... However, a write sequence always requires an address to be supplied. Address Slave Address 1 A Data Byte Acknowledge Data Acknowledge 1 A Data Byte A Acknowledge Data Figure 13. Sequential Memory Read FM3204/16/64/256 No Acknowledge Stop Acknowledge Stop Data Byte 1 P Page ...
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... Rev. 3.1 July 2010 Start A Address LSB A S Acknowledge Address & Data 0 A Address Acknowledge Figure 15. Byte Register Write Address Byte A12 A11 A10 A12 A11 A10 A10 FM3204/16/64/256 No Acknowledge Address Slave Address 1 A Data Byte 1 P Data A Data Byte Address Byte ...
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... 1.6 -0.3 < 2.5V) -0.3 DD -0.3 0 < 2.5V) V – 0.5 DD BAK 0 mA mA) 2.4 50 FM3204/16/64/256 Ratings -1.0V to +7.0V -1.0V to +7.0V * and V ≤ V +1. -1.0V to +4.5V -55° 125°C 260° C 4kV 1kV 250V MSL Typ Max Units Notes 5 500 µA 900 µ ...
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... DD Typ = 2.7V to 5.5V) DD Min Units 10 Years FM3204/16/64/256 Continued » Typ Max Units Notes KΩ MΩ 1.20 1.225 V - 100 mV , and V < V max. BAK BAK BAK Max Min Max Units Notes 400 ...
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... V DOG /RST Timing VDD VTP VRST t RNR RST Rev. 3.1 July 2010 = 2.7V to 5.5V) DD > waveform. > V and t satisfied RPU t RPU FM3204/16/64/256 Min Max Units Notes 100 200 µ µs/V 1,2 100 - 1,2 µs/V 100 200 ms t 2*t ms ...
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... Write Bus Timing SCL t SU:STO SDA Start Rev. 3.1 July 2010 HIGH 1/f SCL t AA Stop Start t HD:DAT t t SU:DAT HD:STA Stop Start FM3204/16/64/256 Equivalent AC Load Circuit 5.5V 1700 Ω Output 100 LOW t HD:DAT t SU:DAT t DH Acknowledge t AA Acknowledge Page ...
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... SOIC Package Marking Scheme Legend: XXXXXXX-P LLLLLLL RIC YYWW Example: FM32256, “Green” SOIC package, Year 2009, Work Week 42 Rev. 3.1 July 2010 XXXX= part number, P= package type (-G) LLLLLLL= lot code RIC=Ramtron Int’l Corp, YY=year, WW=work week FM32256-G B90007G RIC 0942 FM3204/16/64/256 Page ...
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... Removed text indicating that a manual reset sets the POR flag. Rev. 3.1 July 2010 Initial release. Changed product status to Preliminary. Added V limits. Added “green” package. HYS , V , and V TP PFI FM3204/16/64/256 and V parameters PFI parameters and changed V max HYS IH Page ...