STV9420 STMicroelectronics, STV9420 Datasheet
STV9420
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STV9420 Summary of contents
Page 1
... Toggle from one page to another by programming only one register bits PWM DAC are available (STV9421) to provide DC voltage control to other peripherals. The STV9420/21 provides the user an easy to use and cost effective solution to display alphanumeric or graphic information on monitor screen. October 1995 ...
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... STV9420 - STV9421 PIN CONNECTIONS DIP16 1 FBLK 2 H-SYNC 3 V-SYNC PXCK 6 CKOUT 7 XTALOUT 8 XTALIN PIN DESCRIPTION Pin Number Symbol DIP16 PWM1 FBLK 1 H-SYNC 2 V-SYNC PXCK 5 CKOUT 6 XTALOUT 7 XTALIN 8 PWM4 PWM2 SCL 9 SDA 10 RESET 11 GND TEST 16 PWM3 2/16 16 PWM1 TEST 15 FBLK B 14 H-SYNC G 13 ...
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... BLOCK DIAGRAMS STV9420 STV9421 STV9420 - STV9421 3/16 ...
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... STV9420 - STV9421 ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage DD V Input Voltage IN T Operating Ambient Temperature oper T Storage Temperature stg ELECTRICAL CHARACTERISTICS ( 70° Symbol SUPPLY V Supply Voltage DD I Supply Current DD INPUTS SCL, SDA, TEST, RESET, V-SYNC and H-SYNC V Input Low Voltage ...
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... Rise Time of Both SCL and SDA R Note 1 : These parameters are not tested on each unit. They are measured during our internal qualification procedure which includes characterization on batches comming from corners of our processes and also temperature characterization. Figure 2 Parameter Figure 3 STV9420 - STV9421 Min. Typ. Max. Unit 35 ns ...
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... I.1 - Data Transfer in Write Mode 2 C interface The host MCU can write data into the STV9420/21 registers or RAM. To write data into the STV9420/21, after a start, the MCU must send (Figure First, the I for the R/W bit, - The two bytes of the internal address where the MCU wants to write data(s), - The successive bytes of data(s) ...
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... FUNCTIONAL DESCRIPTION (continued) I.3 - Addressing Space STV9420/21 registers, RAM and ROM are mapped in a 16Kbytes addressing space. The mapping is the following : 0000 Descriptors character 1024 bytes codes user definable RAM characters 03FF 0400 Empty Space 1FFF 2000 Character Generator ROM 32FF ...
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... STV9420 - STV9421 FUNCTIONAL DESCRIPTION (continued) The last fourth registers described below are only available with the STV9421 : PULSE WIDTH MODULATOR 1 3FF8 V17 V16 V15 V14 V13 V12 V11 V10 * V1[7:0] : Digital value of the 1 converter (Pin1). PULSE WIDTH MODULATOR 2 3FF9 V27 V26 V25 V24 V23 V22 V21 V20 ...
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... V-SYNC. STV9420 - STV9421 addresses). st displayed character. The characters and ...
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... STV9420 - STV9421 FUNCTIONAL DESCRIPTION (continued) Figure 7 : Relation between Screen/Address Page/Character Code in RAM DISPLAY CONTROL Register CSD FBK FL[1:0] 2nd CHARACTER STRIP CODES OTHER TABLE OF DESCRIPTORS OTHER (UDC for example) 1st CHARACTER STRIP CODES 3rd CHARACTER SRTIP CODES OTHER (CODES OR DESCRIPTORS) RAM CODE ...
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... FUNCTIONAL DESCRIPTION (continued) Table 1 : ROM Character Generator CHARACTER NUMBER C(6:0) C(3:0) C(6: STV9420 - STV9421 11/16 ...
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... The STV9420/21 includes a ROM character gen- erator which is made of 128 alphanumeric or graphic characters (see Table 1) VIII - PLL The PLL function of the STV9420/21 provides the internal pixel clock locked on the horizontal synchro signal and used by the display processor to gener- ate the and fast blancking signals made of 2 PLLs ...
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... YYYN NYYY YYYN NNNY YYYN Value of LINE DURATION Register (@ 3FF0 LD[5:0] = 010000 LD[5:0] = 100000 LD[5:0] = 110000 LD[5:0] = 111111 Table meaning : possible capture Y = PLL can lock STV9420 - STV9421 > 0.7 (damping teristic Equation Solutions (with Complex Solutions) PLL Frequency Input Frequency YNNN NNNN ...
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... A demonstration board is available through your usual SGS-THOMSON Sales Office. This demonstration board alllows to test very easily the STV9420/21 performances on any personnal computer. The board is delivered together with a "page maker" software which allows to easily generate pages of text or graphics on the PC monitor second monitor. ...
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... PACKAGE MECHANICAL DATA (STV9420) 16 PINS - PLASTIC DIP Dimensions Min. a1 0. Millimeters Typ. Max. 1.65 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 STV9420 - STV9421 Inches Min. Typ. 0.020 0.030 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 ...
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... STV9420 - STV9421 PACKAGE MECHANICAL DATA (STV9421) 20 PINS - PLASTIC DIP Dimensions Min. a1 0.254 B 1. Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use ...