The A29L004 is a 4Mbit, 3.0 volt-only Flash memory organized as 524,288 bytes of 8 bits. The 8 bits of data appear on l/00 - l/07. The A29L004 is offered in 40-pin TSOP, 32-pin PLCC or (s)TSOP packages. This device is designed to be programmed in-system with the standard system 3.0 volt VCC supply. Additional 12.0 volt VPP is not required for in-system write or erase operations. However, the A29L004 can also be programmed in standard EPROM programmers. The A29L004 has the first toggle bit, l/06, which indicates whether an Embedded Program or Erase is in progress, or it is in the Erase Suspend. Besides the l/06 toggle bit, the A29L004 has a second toggle bit, l/02, to indicate whether the addressed sector is being selected for erase. The A29L004 also offers the ability to program in the Erase Suspend mode. The standard A29L004 0ffers access times of 70 and 90ns, allowing high-speed microprocessors to operate without wait states. To eliminate bus contention the device has separate chip enable (CE ), write enable (WE ) and output enable (OE ) controls.
STP2003FP Price . VPD is the voltage on the peak detector VIN(min) is the desired start voltage used in the determination of RKFF In a typical case, VPD = 8V, and R4 is found to be 247 kl , and a standard value of 243kl is selected. Testing shows the startup voltage to be 9.2 V, and the shutdown voltage to be 8.5 V.
STP2003FP on stock| l(E5614L Modem Registers |
| 30 Answer on nth Ring: SO sets the modem to S7 Wait for Carrier after Dialing: S7 determines how long automatically answer on the nth ring. Setting SO t0 0 the modem waits for a valid carrier signal after dialing. disables automatic answer. Range: 1 t0 255 Range: O t0 255 Units Seconds Units Rings Default 50 De fault O S8 Comma Pause Time: S8 defines the duration of the 31 Ring Count: Sl is a read-only register showing the pause set by a comma in the dialing string. The pause is number of rings detected. If a ring is not detected within generally used when waiting for a second dial tone. 8 seconds, Sl is reset to zero. Range: 1 t0 255 Range: 0 t0 255 Units Seconds Units Rings Default 50 De fault O S9 Reserved 32 Escape Character: S2 sets the ASCII escape character. Values of0-127 select valid ASCII escape characters; Slo Carrier Off Disconnect Delay: Slo selects how long values from 128 t0 255 disable the escape sequence. carrier must be lost before the modem disconnects. Range: 0 t0 255 Range: 1 t0 255 Units ASCIICharacter Units 0.1 Seconds Default 43 (+) Default 14 33 Carriage Return Character: S3 determines the ASCII Sll Tone Dialing Speed: Slo sets the duration and spacing oi character to serve as a carriage retum to terminate the dialing tones. Sll does not affect pulse dialing. commands and modem responses. Range: 50 t0 255 Range: O t0 127 Units l Millisecond Units ASCIICharacter Default 95 Default 13 (Carriage Retum) S12 Escape Code Guard Timer: S12 sets the guard timer for 34 Line Feed Character: S4 sets the ASCII character to the escape sequence. Ifcharacters are received within the act as a line feed character in modem responses. guard time, the modem aborts the escape attempt and Range: 0 t0 127 remains in data mode. Units ASCIICharacter Range: 0 t0255 Default 10 (Line Feed) Units 0.02 Seconds De fault 5 0 35 Back Space Character: S5 defines the ASCII character used as a backspace to edit the command line. S14 General Bit-Mapped Options: S14 reflects the state of Range: O t0 32 several "AT" commands. Units ASCII Character Bit 0,4,6 Not Used Default 8 (Back Space) Bit 1 0 = Echo Disabled (ATEO) 1 = Echo Active (ATEl) 36 Dial Tone Wait Time: S6 determines how long the Bit 2 0 = Send Result Codes (ATQO) modem waits for dial tone before dialing begins. The l = No Result Codes (ATQl) Dial Tone Wait Time cannot be set to less than two Bit 3 0 = Numeric Result Codes (ATVO) seconds. 1 = Full Word Result Codes (ATVl) Range: 2 t0 255 Bit 5 0 = Tone Dialing Selected (T) Units Seconds l = Pulse Dialing Selected (P) De fault 2 Bit 7 0 = Answer 1 = Originate |
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