SC28L91A1B,528 NXP Semiconductors, SC28L91A1B,528 Datasheet
![IC UART SINGLE W/FIFO 44PQFP](/photos/6/62/66269/568-44-qfp_sot307-2_sml.jpg)
SC28L91A1B,528
Specifications of SC28L91A1B,528
SC28L91A1B-T
SC28L91A1B-T
Available stocks
Related parts for SC28L91A1B,528
SC28L91A1B,528 Summary of contents
Page 1
SC28L91 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Product data sheet Supersedes data of 2000 Sep 22 INTEGRATED CIRCUITS 2004 Oct 21 ...
Page 2
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) DESCRIPTION The SC28L91 is a new member of the IMPACT family of Serial Communications Controllers single channel UART operating at 3.3 V and 5 ...
Page 3
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) ORDERING INORMATION Description 44-Pin Plastic Leaded Chip Carrier (PLCC) 44-Pin Plastic Quad Flat Pack (PQFP) 2004 Oct 21 Industrial ...
Page 4
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) PIN CONFIGURATION DIAGRAM 80XXX PIN CONFIGURATION PQFP Pin Function Pin Function GND 2 IP0 17 GND 3 WRN 18 INTRN ...
Page 5
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) PIN CONFIGURATION DIAGRAM 68XXX PIN CONFIGURATION PQFP Pin Function Pin Function GND 2 IP0 17 GND 3 R/WN 18 INTRN ...
Page 6
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) 8 D0–D7 BUS BUFFER OPERATION CONTROL RDN WRN ADDRESS DECODE CEN 4 A0–A3 R/W CONTROL RESET INTERRUPT CONTROL INTRN IMR ISR GP TIMING BAUD RATE GENERATOR CLOCK SELECTORS COUNTER/ ...
Page 7
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) 8 D0–D7 BUS BUFFER OPERATION CONTROL R/WN IACKN ADDRESS DECODE CEN 4 A0–A3 R/W CONTROL RESETN INTERRUPT CONTROL INTRN IMR DACKN ISR IVR TIMING BAUD RATE GENERATOR CLOCK SELECTORS ...
Page 8
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) PIN CONFIGURATION FOR 80XXX BUS INTERFACE (INTEL ) Pin type Symbol Name and function I/M I Bus Configuration: When high or not connected configures the bus interface to the ...
Page 9
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) PIN CONFIGURATION FOR 68XXX BUS INTERFACE (MOTOROLA ) Pin type Symbol Name and function I/M I Bus Configuration: When low configures the bus interface to the Conditions shown in ...
Page 10
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) 1 ABSOLUTE MAXIMUM RATINGS Symbol Parameter T Operating ambient temperature range amb T Storage temperature range stg 3 V Voltage from V to GND Voltage from ...
Page 11
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) DC ELECTRICAL CHARACTERISTICS – +85 C, unless otherwise specified. CC amb Symbol Parameter V Input low voltage IL V ...
Page 12
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART CHARACTERISTICS (5 VOLT 5 – +85 C, unless otherwise specified. CC amb Symbol Parameter Reset ...
Page 13
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Symbol Parameter Receiver Timing, external clock (See Figure 13) t RxD data setup time to RxC high *RXS t RxD data hold time from RxC high *RXH 68000 or ...
Page 14
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) AC CHARACTERISTICS (3.3 VOLT 3 – +85 C, unless otherwise specified. CC amb Symbol Parameter Reset Timing (See Figure 4) ...
Page 15
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Symbol Parameter Receiver Timing, external clock (See Figure 13) t RxD data setup time to RxC high *RXS t RxD data hold time from RxC high *RXH 68000 or ...
Page 16
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Block Diagram The SC28L91 UART consists of the following seven major sections: data bus buffer, operation control, interrupt control, timing, Rx and Tx FIFO Buffers, input port and output ...
Page 17
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) This continues regardless of issuance of the stop counter command. ISR[3] is reset by the stop counter command. NOTE: Reading of the CTU and CTL registers in the timer ...
Page 18
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) “just missed” and the first change-of-state is not detected until 25 s later. Output Port The output ports are controlled from six places: the OPCR, OPR, MR, Command, SOPR ...
Page 19
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) in the status register is set whenever one or more characters are available to be read, and a FFULL status bit is set if all stack ...
Page 20
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) latency is longer than the pause in the data stream.) In this case, when a new character has been received, the counter/timer will be restarted by the receiver, thereby ...
Page 21
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Register Acronyms and Read / Write Capability (R/W = Read/Write Read only Write only) Mode Register Status Register Clock Select Command Register Receiver FIFO Transmitter ...
Page 22
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) REGISTER DESCRIPTIONS MODE REGISTERS MR0 – Mode Register 0 Mode Register 0. MR0 is accessed by setting the MR pointer to 0 via the command register command B. Addr ...
Page 23
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) MR1 – Mode Register 1 Addr BIT 7 BIT 6 MR1 Rx CONTROLS RxINT RTS BIT 1 0x00 RxRDY 1 = Yes 1 = ...
Page 24
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) MR2 – Mode Register 2 MR2 is accessed when the MR pointer points to MR2, which occurs after any access to MR1. Accesses to MR2 do not change the ...
Page 25
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) 6. The last character will be transmitted and OPR[0] will be reset one bit time after the last stop bit, causing RTSN to be negated. MR2[4]— Clear-to-Send Control If ...
Page 26
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) CSR CLOCK SELECT REGISTER Addr CSR (7:4) CSR RECEIVER CLOCK SELECT 0x01 See Text and table 5 Table 5. Baud rate (base on a 3.6864MHz crystal clock) MR0[0] = ...
Page 27
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) CR—Command Register register used to supply commands to the UART. Multiple commands can be specified in a single write long as the commands ...
Page 28
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) SR Status Register Addr Bit 7 BIT 6 SR RECEIVED FRAMING 1 1 BREAK ERROR 0x01 Yes 1 = Yes 1. ...
Page 29
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) OPCR Output Port Configuration Register Addr Bit 7 BIT 6 OPCR OP7 OP6 0x0D 0 = OPR[ OPR[ Reserved 1 = TxRDY OPCR[7]—OP7 Output Select ...
Page 30
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) OPR Output Port Register The output pins (OP pins) drive the compliment of the data in this register as controlled by SOPR and ROPR. Addr Bit 7 BIT 6 ...
Page 31
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) ISR—Interrupt Status Register This register provides the status of all potential interrupt sources. The contents of this register are masked by the Interrupt Mask Register (IMR bit ...
Page 32
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) CTPU and CTPL – Counter/Timer Registers CTPU Counter Timer Preset Upper CTPU Bit 7 BIT 6 0x06 The lower eight (8) bits for the 16 bit counter timer preset ...
Page 33
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) RESETN t RES 80XXX Mode A0– CEN t CS RDN D0–D7 FLOAT (READ) WDN D0–D7 (WRITE) NOTE: Bus action in the 80XXX mode terminates on the rise ...
Page 34
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) X1/CLK A1–A4 RWN CSN D0– DTACKN NOTE: DACKN low requires two rising edges of X1 clock after CSN is low. Figure 6. Bus Timing (Read Cycle) (68XXX ...
Page 35
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) X1/CLK INTRN IACKN D0–D7 DTACKN NOTE: DACKN low requires two rising edges of X1 clock after CSN is low. RDN IP0–IP6 (a) INPUT PINS WRN OP0–OP7 (b) OUTPUT PINS ...
Page 36
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) WRN INTERRUPT OUTPUT RDN INTERRUPT OUTPUT NOTES: 1. INTRN or OP3-OP7 when used as interrupt outputs. 2. The test for open-drain outputs is intended to guarantee switching of the ...
Page 37
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) TxC (INPUT) TxD TxC (1X OUTPUT) RxC (1X INPUT) RxD TxD D1 TRANSMITTER ENABLED TxRDY (SR2) WRN CTSN (IP0) 2 RTSN (OP0) OPR( NOTES: ...
Page 38
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) D1 RxD RECEIVER ENABLED RxRDY (SR0) FFULL (SR1) RxRDY/ FFULL 2 (OP5) RDN STATUS DATA D1 OVERRUN (SR4) 1 RTS (OP0) OPR[ NOTES: 1. Timing shown for ...
Page 39
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART 2.4mA INTRN DACKN 125pF I = 2.4mA V return 400 A V return D0–D7 TxDA/B OP0–OP7 125pF Figure 17. ...
Page 40
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) PLCC44: plastic leaded chip carrier; 44 leads 2004 Oct 21 40 Product data sheet SC28L91 SOT187-2 ...
Page 41
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) QFP44: plastic quad flat package; 44 leads (lead length 1.3 mm); body 1.75 mm 2004 Oct 21 41 Product data sheet SC28L91 SOT307-2 ...
Page 42
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) REVISION HISTORY Rev Date Description _3 20041021 Product data (9397 750 13124). Supersedes Product specification of 2000 Sep 22 (9397 750 07549). Modifications: AC electrical characteristics (5 V) table: ...
Page 43
Philips Semiconductors 3 5.0 V Universal Asynchronous Receiver/Transmitter (UART) Data sheet status Product [1] Level Data sheet status [2] [3] status I Objective data sheet Development II Preliminary data sheet Qualification III Product data sheet Production [1] Please ...