Contents Features........................................................... 1 Applications...................................................... 1 Pin Assignment ................................................ 1 Block Diagram.................................................. 1 Terminal Description ........................................ 2 Mode Table ...................................................... 2 Absolute Maximum Ratings ............................. 2 Recommended Operating Conditions.............. 2 DC Electrical Characteristics ........................... 3 AC Electrical Characteristics............................ 3 Read Mode Operation...................................... 4 Counter Hold Mode Operation ......................... 4 Program Mode Operation ................................ 5 Input Priority ..................................................... 6 Notes................................................................ 6 Dimensions ...................................................... 7 Characteristics ................................................. 8 S-2100R 64-bit FUSE ROM The S-2100R is a CMOS 64-bit serial FUSE ROM. It has a low standby current (0.3 mA max., VDD=1.5 V) and has a wide operating voltage range. Data can be read serially by clock pulses from address 1 to address 64. All the addresses are initialized at “H” so writing into “L” can be done only once. n Features · · n Applications Low standby current (0.3 mA max., Wide operating voltage range · · · VDD=1.5 V) Pager ID ROM Cordless telephone Security equipment n Pin Assignment 8-pin DIP Top view 8-pin SOP Top view DATA 1 8 VDD CE/PE 2 7 RST 3 6 CLK COUNTER OUT VSS 4 5 DATA 1 8 VDD CE/PE 2 7 RS 3 6 CL 4 5 PD/VPP COUNTER OUT PD/VPP VSS Figure 1 n Block Diagram COUNTER OUT ƒ CLK RST COUT CL † ‡ 6-BIT COUNTER RS READ / WRITE CONTROL VP ROW DECODER DIN COLUMN DECODER A1 A0 DE 64-BIT FUSE ROM MEMORY CELL MATRIX SENSE AMP. DOUT CE/PE ‚ DATA • A2 A3 A4 A5 VPP DATA CONTROL VPP CONTROL ˆVDD „VSS VPI … PD/VPP Figure 2 Seiko Instruments Inc. 1 64-bit FUSE ROM S-2100R n Terminal Description Table 1 Pin No. Symbol 1 DATA Data input/output terminal Tri-state data input/output terminal 2 CE/PE Mode select terminal Mode select terminal (Refer to operation mode table) 3 Pin Name Description COUNTER Counter output terminal OUT 6-bit counter; 64th bit detection output terminal 4 VSS Negative power supply terminal Normally, connected to GND. 5 PD/VPP Program voltage input terminal Input terminal of writing voltage to FUSE memory at 21 V. (Refer to operation mode table.) Pull-down resistor built in. 6 CLK Clock input terminal Clock input terminal of 6-bit counter. falling edge. Operates at the 7 RST Reset input terminal Reset input terminal of 6-bit counter. Operates at “L”. 8 VDD Positive power supply terminal Normally, connected to +1.1 to +5.5 V. n Mode Table Table 2 Terminal CE/PE PD/VPP Read VSS VSS Input possible Input possible Data output Counter hold VDD VSS Input impossible Input impossible High impedance Program VDD VPP Input impossible Input impossible Data input Read CLK n Absolute Maximum Ratings RST DATA Table 3 Parameter Symbol Ratings Unit Power supply voltage VDD -0.3 to +6.5 V PD/VPP input voltage VPP -0.3 to 26 V Input voltage VIN VSS -0.3 to VDD+0.3 V Output voltage VOUT VSS -0.3 to VDD+0.3 V Storage temperature under bias Vbias -30 to +85 °C Storage temperature Vstg -40 to +125 °C n Recommended Operating Conditions Table 4 Parameter Power supply voltage High level input voltage 2 Symbol VDD VIH Low level input voltage VIL Operating temperature Vopr Conditions tCH=15ms Min. Typ. Max. Unit V Ta=25°C, Read, 1.1 1.5 5.5 Ta=25°C, Write 4.5 5.0 5.5 V Ta=25°C, Read VDD-0.3 ¾ VDD V Ta=25°C, Write VDD-0.3 ¾ VDD V Ta=25°C, Read -0.3 ¾ 0.3 V Ta=25°C, Write -0.3 ¾ 0.5 V -20 ¾ 70 °C Seiko Instruments Inc. 64-bit FUSE ROM S-2100R n DC Electrical Characteristics Table 5 Parameter Symbol Conditions Min. Typ. Max. Unit fCLK=50 kHz ¾ ¾ 20 mA ¾ ¾ 0.3 mA 20 21 22 V Operating current consumption IDDO VDD=1.5 V, Standby current consumption IDDS VDD=1.5 V, RST=VDD CLK=VDD, CE/PE=VSS PD/VPP input voltage VPP ¾ ¾ 150 mA IOH VDD=1.1 to 5.5 V, VOH=VDD-0.3 V -300 ¾ ¾ mA IOL VDD=1.1 to 5.5 V, VOH=0.3 V 300 ¾ ¾ mA RD VDD=1.5 V 0.1 0.2 0.4 MW PD/VPP input current IPP Output current Pull-down resistance n AC Electrical Characteristics 1. Read mode Table 6 (Ta=25°C, VDD=1.5 V) Parameter Symbol Min. Typ. Max. Unit RST hold time tRH 5.0 ¾ ¾ ms Read cycle time tRC 2.0 ¾ ¾ ms CLK hold time tCH 5.0 ¾ ¾ ms Access time tACC ¾ ¾ 5.0 ms CE/PE setup time tCES 2.0 ¾ ¾ ms RST setup time tRS 5.0 ¾ ¾ ms CLK setup time tCS 5.0 ¾ ¾ ms CE access time tCE ¾ ¾ 5.0 ms Output disable time tWZ ¾ ¾ 500 ns CLK and RST inhibit time tCRI ¾ ¾ 500 ns Load : 60 pF 2. Write mode Table 7 (Ta=25°C, VDD=5.0 V, VPP=21 V) Parameter Symbol Min. Typ. Max. Unit CE-data setup time tCDS 0.5 ¾ ¾ ms Data setup time tDS 0.5 ¾ ¾ ms Data hold time tDH 0 ¾ ¾ ms CE-data hold time tCDH 2.0 ¾ ¾ ms VPP rise time Program pulse width VPP rise slope tr 20 ¾ ¾ ms tPW 8.0 ¾ ¾ ms DVPP ¾ ¾ 4 V/ms Seiko Instruments Inc. 3 64-bit FUSE ROM S-2100R Read Mode Operation 1 By setting the CE/PE terminal to “ L” level, the S-2100R enters the read mode. * Next, adding an RST pulse causes the contents of the memory bit of address 1 to be output at the DATA terminal; the rising of the RST pulse latches the data and 2 3 stabilizes it. * Reading of addresses from 2 to 64 can be done by adding a CLK pulse sequentially after reading address 1. * As soon as address 64 has been read, the COUNTER OUT terminal outputs “ H” level. When it finishes reading address 64, it does not accept any more CLK pulses and the counter does not operate. The data of address 64 is maintained till address 1 is read by the RST pulse. CE/PE tCES tRH tRS RST tRC CLK tCH tRC tRC tACC tCE DATA tACC Address 1 output Address 2 output Address 3 output Address 1 output Figure 3 Read mode timing *1 *2 *3 When both the CLK and RST terminals are at “ H” level. When the RST terminal is at “ L” level, the latch is transparent and the data is recognized by the rising of the RST pulse. Data read by the CLK pulse is latched at its rising. Counter Hold Mode Operation By setting the CE/PE terminal to “ H” level, the S-2100R enters the counter hold mode and the DATA terminal becomes high 4 impedance. * In counter hold mode, the CLK and RST pulses which fall while the CE/PE terminal is at “ H” level are recognized to be invalid and there is no change in counter and data output. When the CE/PE terminal is set to “ L” level again, it returns to the condition in which it was before the counter hold mode. tCES CE/PE tCRI RST tCS CLK DATA tWZ Address M output Address M+1 output Figure 4 Counter hold mode timing 4 * 4 When both the CLK and RST terminals are at “ H” level. Seiko Instruments Inc. Address M+1 output 64-bit FUSE ROM S-2100R n Program Mode Operation By setting the CE/PE terminal to “H” level, the S-2100R enters the counter hold mode and at the same time enters the program mode. *5 Writing is done in program mode after selecting the address in read mode. *6 Select the address, and supply “H” level to the CE/PE terminal and “L” level to the DATA terminal, with the writing pulse VPP being supplied to the PD/VPP terminal. “L” level can be written into the selected address only once. *7 *8 If you coutinue writing from address 1 to 64, the output of the COUNTER OUT terminal goes to “H” level, just like in the read mode, and no more CLK pulses or writing pulses in program mode can be accepted. CE/P RS CL DATA tCDH tCDS Address 1 output Address 1 output Data input Address 2 output Data input tDH tDS PD/VPP tPW Figure 5 *5 *6 *7 *8 Program mode timing In program mode, operate at VDD=5.0 V to assure reliability of the data writing. The selection of addresses is possible only in read mode. Address 1 is selected by RST pulses and writing proceeds sequentially from address 1 by CLK pulse. All the memories are initially at “H” level, so writing into “L” can be done. When data is at “H” level, writing voltage cannot be supplied to the memory. Address 1 is selected again by the RST pulse. The addresses which are not written to “L” level are at “H” level, so writing “L” level in these addresses is possible. Seiko Instruments Inc. 5 64-bit FUSE ROM S-2100R n Input Priority In read mode, priority is given to either the CLK or RST terminal, whichever is entered first. Whichever pulse is input earlier is recognized to be valid from the rising till the end of the operation. If the pulse input later is at “L” level, the signal is ignored, even though the effective pulse input earlier rises. *9 If the CLK and RST pulses are input, the mode shifts from read mode to counter hold mode when both the CLK and the RST terminals go to “H” level. *10 If the CLK and RST pulses which are input in the counter hold mode are still at “L” level after setting the CE/PE terminal to “L” level, these CLK and RST terminals are ignored. The mode shifts to read mode and data which is held before the shift is output at the DATA terminal. *11 In program mode, inputting the DATA terminal before the CE/PE terminal goes to “H” level is prohibited. Also, charging the writing voltage from the PD/VPP terminal is prohibited when the CE/PE terminal is at “L” level. In program mode, input to the DATA terminal muse be decided before charging the writing voltage. *12 *9 Input of the CLK and RST pulses is not recognized as valid unless both pulses are input at “H” level. *10 The counter hold mode is entered when reading of the CLK and RST pulses has been finished and DATA output has been stabilized . *11 No more CLK or RST pulses are accepted unless both the CLK and RST terminals are at “H” level. *12 If data input is changed while writing voltage is supplied, the S-2100R does not accept the changed data. n Notes Memory should not be accessed for at least 10 ms after voltage is supplied and goes to VDD. 6 Seiko Instruments Inc. 64-bit FUSE ROM S-2100R n Dimensions 1. 8-pin DIP 8.8 (9.2 max.) 5 8 6.4 4 1.5 1 1.0 7.62 3.4±0.25 4.5 max. 0.51 min. 2.54 2.69 min. 0.46±0.15 0°~15° 0.25±0.15 Unit:mm Figure 6 2. 8-pin SOP 8 5.0 (5.15 max.) 5 0.55 5.0 1 6.8±0.4 0.15 +0.1 -0.05 4 1.6±0.15 2.15 max. 0 min. 1.27 0.35 +0.1 -0.05 Unit: mm Figure 7 Seiko Instruments Inc. 7 64-bit FUSE ROM S-2100R n Characteristics 1. Standby current consumption IDDSAmbient temperature Ta 104 VDD= 6.0V 4.0V 2.0V 1.0V 103 IDDS (nA) 102 101 100 -40 -10 20 50 80 Ta (°C) 2. Access time tACC- 3. Access time tACCPower supply voltage VDD Power supply voltage VDD 0.7 8 -40°C -10°C 20°C 50°C 80°C 6 tACC (ms) 80°C 50°C 20°C -10°C -40°C 0.6 tACC (ms) 0.5 0.4 4 0.3 0.2 2 0.1 0 0 1.0 1.5 2.0 2 VDD (V) 8 3 4 VDD (V) Seiko Instruments Inc. 5 6