TSC87C52-12IBR

TSC87C52 CMOS 0 to 33 MHz Programmable 8–bit Microcontroller Description TEMIC’s TSC87C52 is high performance CMOS EPROM version of the 80C52 CMOS single chip 8 bit microcontroller. The fully static design of the TSC87C52 allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data. The TSC87C52 retains all the features of the 80C52 with some enhancement: 8 K bytes of internal code memory (EPROM); 256 bytes of internal data memory (RAM); 32 I/O lines; three 16 bit timers one with count–down and clock–out capability; a 6-source, 2-level interrupt structure; a full duplex serial port with framing error detection; a power off flag; and an on-chip oscillator. The TSC87C52 has 2 software-selectable modes of reduced activity for further reduction in power consumption. In the idle mode the CPU is frozen while the RAM, the timers, the serial port and the interrupt system continue to function. In the power down mode the RAM is saved and all other functions are inoperative. The TSC87C52 is manufactured using non volatile SCMOS process which allows it to run up to: D D 33 MHz with VCC = 5 V ± 10%. 16 MHz with 2.7 V < VCC < 5.5 V. Features D 8 Kbytes of EPROM G G D D D D D D D D Improved Quick Pulse programming algorithm Secret ROM by encryption D D D D D Fully static design 0.8µ SCMOS non volatile process ONCE Mode Enhanced Hooks system for emulation purpose Available temperature ranges: G G commercial industrial PDIP40 (OTP) PLCC44 (OTP) PQFP44 (OTP) CQPJ44 (UV erasable) CERDIP40 (UV erasable) 256 bytes of RAM 64 Kbytes program memory space 64 Kbytes data memory space 32 programmable I/O lines Three 16 bit timer/counters including enhanced timer 2 Programmable serial port with framing error detection Power control modes Two–level interrupt priority D Available packages: G G G G G MATRA MHS Rev. C – 10 Sept 1997 1 Preliminary TSC87C52 Block Diagram EPROM Figure 1 TSC87C52 Block diagram 2 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 Pin Configuration P1.1/T2EX P0.0/AD0 P0.1/AD1 P0.2/AD2 VSS1 P1.1/T2EX P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST P3.0/RxD P3.1/TxD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD XTAL2 XTAL1 VSS 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 EA/VPP ALE/PROG PSEN P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 P1.5 P1.6 P1.7 RST P3.0/RxD Reserved P3.1/TxD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 P3.6/WR P2.2/A10 VSS Reserved P2.3/A11 P2.4/A12 P3.7/RD P2.0/A8 P2.1/A9 XTAL2 XTAL1 P1.0/T2 P1.0/T2 1 40 VCC P1.4 P1.3 P1.2 P0.3/AD3 39 38 37 36 35 6 5 4 3 2 1 44 43 42 41 40 P0.4/AD4 P0.5/AD5 P0.6/AD6 P0.7/AD7 EA/VPP Reserved ALE/PROG PSEN P2.7/A15 P2.6/A14 P2.5/A13 DIP PLCC/CQPJ VCC 34 33 32 31 30 29 P1.1/T2EX P0.0/AD0 P0.1/AD1 P0.2/AD2 44 43 42 41 40 39 38 37 36 35 34 P1.5 P1.6 P1.7 RST P3.0/RxD Reserved P3.1/TxD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 P2.3/A11 P2.4/A12 33 32 31 30 29 P0.4/AD4 P0.5/AD5 P0.6/AD6 P0.7/AD7 EA/VPP Reserved ALE/PROG PSEN P2.7/A15 P2.6/A14 P2.5/A13 Flat Pack P0.3/AD3 28 27 26 25 24 23 P1.0/T2 VSS1 XTAL1 P2.0/A8 VCC P1.4 P1.3 P1.2 Figure 2 TSC87C52 pin configuration Do not connect Reserved pins. MATRA MHS Rev. C – 10 Sept 1997 VSS Reserved P2.2/A10 P3.7/RD P3.6/WR P2.1/A9 XTAL2 3 Preliminary TSC87C52 Pin Description VSS Circuit ground potential. VSS1 Secondary ground (not on DIP). Provided to reduce ground bounce and improve power supply by–passing. Note: This pin is not a substitute for the VSS pin. Connection is not necessary for proper operation. VCC Supply voltage during normal, Idle, and Power Down operation. Port 0 Port 0 is an 8 bit open drain bi-directional I/O port. Port 0 pins that have 1’s written to them float, and in that state can be used as high-impedance inputs. Port 0 is also the multiplexed low-order address and data bus during accesses to external Program and Data Memory. In this application it uses strong internal pullups when emitting 1’s. Port 0 can sink eight LS TTL inputs. Port 0 is used as data bus during EPROM programming and program verification. Port 1 Port 1 is an 8 bit bi-directional I/O port with internal pullups. Port 1 pins that have 1’s written to them are pulled high by the internal pullups, and in that state can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current (IIL, in the DC parameters section) because of the internal pullups. Port 1 can sink/ source three LS TTL inputs. It can drive CMOS inputs without external pullups. Port1 also serves the functions of the following special features of the TSC87C52 as listed below: Port Pin P1.0 P1.1 Alternate Function T2 (External Count input to Timer/Counter 2), Clock–Out T2EX (Timer/Counter 2 Capture/Reload Trigger and direction Control) Port 1 receives the low–order address byte during EPROM programming and program verification. Port 2 Port 2 is an 8 bit bi-directional I/O port with internal pullups. Port 2 pins that have 1’s written to them are pulled high by the internal pullups, and in that state can be used as inputs. As inputs, Port 2 pins that are externally being pulled low will source current (IIL, in the DC parameters section) because of the internal pullups. Port 2 emits the high-order address byte during fetches from external Program Memory and during accesses to external Data Memory that use 16 bit addresses (MOVX @DPTR). In this application, it uses strong internal pullups when emitting 1’s. During accesses to external Data Memory that use 8 bit addresses (MOVX @Ri), Port 2 emits the contents of the P2 Special Function Register. Port 2 can sink/source three LS TTL inputs. It can drive CMOS inputs without external pullups. Some Port 2 pins receive the high–order address bits and control signals during EPROM programming and program verification. Port 3 Port 3 is an 8 bit bi-directional I/O port with internal pullups. Port 3 pins that have 1’s written to them are pulled high by the internal pullups, and in that state can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (IIL, in the DC parameters section) because of the pullups. 4 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 Port 3 also serves the functions of various special features of the TEMIC’s C51 Family, as listed below: Port Pin P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.7 Alternate Function RxD (serial input port) TxD (serial output port) INT0 (external interrupt 0) INT1 (external interrupt 1) T0 (Timer 0 external input) T1 (Timer 1 external input) WR (external Data Memory write strobe) RD (external Data Memory read strobe) Port 3 can sink/source three LS TTL inputs. It can drive CMOS inputs without external pullups. Some Port 3 pins receive control signals during EPROM programming and program verification. RST A high level on this pin for two machine cycles while the oscillator is running resets the device. An internal pull-down resistor permits Power-On reset using only a capacitor connected to VCC. The port pins will be driven to their reset condition when a minimum VIH1 voltage is applied whether the oscillator is started or not (asynchronous reset). ALE/PROG Address Latch Enable output for latching the low byte of the address during accesses to external memory. ALE is activated as though for this purpose at a constant rate of 1/6 the oscillator frequency except during an external data memory access at which time one ALE pulse is skipped. ALE can sink/source 8 LS TTL inputs. It can drive CMOS inputs without external pullup. If desired, to reduce EMI, ALE operation can be disabled by setting bit 0 of SFR location 8Eh (MSCON). With this bit set, the pin is weakly pulled high. However, ALE remains active during MOVX, MOVC instructions and external fetches. Setting the ALE disable bit has no effect if the microcontroller is in external execution mode (EA=0). Throughout the remainder of this datasheet, ALE will refer to the signal coming out of the ALE/PROG pin, and the pin will be referred to as the ALE/PROG pin. PSEN Program Store Enable output is the read strobe to external Program Memory. PSEN is activated twice each machine cycle during fetches from external Program Memory. (However, when executing out of external Program Memory, two activations of PSEN are skipped during each access to external Data Memory). PSEN is not activated during fetches from internal Program Memory. PSEN can sink/source 8 LS TTL inputs. It can drive CMOS inputs without an external pullup. EA/VPP External Access enable. EA must be strapped to VSS in order to enable the device to fetch code from external Program Memory locations 0000h to FFFFh. Note however, that if any of the Security bits are programmed, EA will be internally latched on reset. EA should be strapped to VCC for internal program execution. This pin also receives the programming supply voltage (VPP) during EPROM programming. XTAL1 Input to the inverting amplifier that forms the oscillator. Receives the external oscillator signal when an external oscillator is used. XTAL2 Output from the inverting amplifier that forms the oscillator. This pin should be floated when an external oscillator is used. MATRA MHS Rev. C – 10 Sept 1997 5 Preliminary TSC87C52 New and Enhanced Features In comparison to the original 80C52, the TSC87C52 implements some new and enhanced features. The new features are the Power Off Flag, the ONCE mode and the ALE disabling. The enhanced features are located in the UART and the Timer 2. Power Off Flag The Power Off Flag allows the user to distinguish between a ‘cold start’ reset and a ‘warm start’ reset. A cold start reset is one that is coincident with VCC being turned on to the device after it was turned off. A warm start reset occurs while VCC is still applied to the device and could be generated for example by an exit from Power Down. The Power Off Flag (POF) is located in PCON at bit location 4 (see Table 1). POF is set by hardware when VCC rises from 0 to its nominal voltage. The POF can be set or cleared by software allowing the user to determine the type of reset. Table 1 PCON – Power Control Register (87h) 7 SMOD1 6 SMOD0 5 – 4 POF 3 GF1 2 GF0 1 PD 0 IDL Symbol SMOD1 SMOD0 Description Serial Port Mode bit 1, new name of SMOD bit Set to select double baud rate in mode 1,2 or 3. Serial Port Mode bit 0 Set to to select FE bit in SCON. Clear to select SM0 bit in SCON. Reserved Do not write 1 in this bit. Power Off Flag Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set by software. Clear by software to recognize next reset type. General purpose Flag Set by software for general purpose usage. Clear by software for general purpose usage. General purpose Flag Set by software for general purpose usage. Clear by software for general purpose usage. Power Down mode bit Set to enter power down mode. Clear by hardware when reset occurs. Idle mode bit Set to enter idle mode. Clear by hardware when interrupt or reset occur. – POF GF1 GF0 PD IDL The reset value of PCON is 00XX 0000b. ONCE Mode The ONCE mode facilitates testing and debugging of systems using TSC87C52 without the TSC87C52 having to be removed from the circuit. The ONCE mode is invoked by driving certain pins of the TSC87C52, the following sequence must be exercised. D D 6 Pull ALE low while the device is in reset (RST high) and PSEN is high. Hold ALE low as RST is deactivated. MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 While the TSC87C52 is in ONCE mode, an emulator or test CPU can be used to drive the circuit. Table 2 shows the status of the port pins during ONCE mode. Normal operation is restored when normal reset is applied. Table 2 External pin status during ONCE mode ALE Weak pull–up PSEN Weak pull–up Port 0 Float Port 1 Weak pull–up Port 2 Weak pull–up Port 3 Weak pull–up XTAL1/2 Active ALE Disabling The ALE signal is used to demultiplex address and data buses on port 0 when used with external program or data memory. Nevertheless, during internal code execution, ALE signal is still generated. In order to reduce EMI, ALE signal should be disabled by setting AO bit. The AO bit is located in MSCON at bit location 0 (see Table 3). As soon as AO is set, ALE is no longer output but remains active during MOVX and MOVC instructions and external fetches. During ALE disabling, ALE pin is weakly pulled high. Table 3 MSCON – Miscellaneous Control Register (8Eh) 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 AO Symbol – AO Reserved Do not write 1 in these bits. Description ALE Output bit Set to disable ALE operation during internal fetches. Clear to restore ALE operation during internal fetches. The reset value of MSCON is XXXX XXX0b. UART The UART in the TSC87C52 operates identically to the UART in the 80C51 but includes the following enhancement. For a complete understanding of the TSC87C52 UART please refer to the description in the 80C51 Hardware Description Guide. Framing Error Detection Framing error detection allows the serial port to check for missing stop bits in the communication in mode 1, 2 or 3. A missing stop bit can be caused for example by noise on the serial lines or transmission by two CPUs simultaneously. If a stop bit is missing a Framing Error bit (FE) is set. The FE bit can be checked in software after each reception to detect communication errors. Once set, the FE bit must be cleared in software. A valid stop bit will not clear FE. The FE bit is located in SCON at bit location 7. It shares the same bit location as SM0 (see Table 4). The new control bit SMOD0 in PCON (see Table 1) determines whether the SM0 or FE bit is accessed (see Figure 3), so whether the framing error detection is enabled or not. If SMOD0 is set then SCON.7 functions as FE, if SMOD0 is cleared then SCON.7 functions as SM0. Once set, the FE bit must be cleared by software. A valid stop bit will not clear FE. When UART is in mode 1 (8–bit mode), RI flag is set during stop bit whether or not framing error is enabled (see Figure 4). MATRA MHS Rev. C – 10 Sept 1997 7 Preliminary TSC87C52 When in mode 2 and 3 (9–bit mode), RI flag is set during stop bit if framing error is enabled or during ninth bit if not (see Figure 5). SM0/FE SM1 SM2 REN TB8 RB8 TI RI Set FE bit if stop bit is 0 (framing error) SM0 to UART mode control SMOD1 SMOD0 – POF GF1 GF0 PD IDL To UART framing error control Figure 3 Framing error block diagram RXD Start bit D0 D1 D2 D3 D4 D5 D6 D7 Stop bit Data byte RI SMOD0=X FE SMOD0=1 Figure 4 Enhanced UART timing diagram in mode 1 RXD Start bit D0 D1 D2 D3 D4 D5 D6 D7 D8 Ninth bit Stop bit Data byte RI SMOD0=0 RI SMOD0=1 FE SMOD0=1 Figure 5 Enhanced UART timing diagram in mode 2 and 3 Table 4 SCON – Serial Control Register (98h) 7 SM0/FE Symbol FE 6 SM1 5 SM2 Description 4 REN 3 TB8 2 RB8 1 TI 0 RI Framing Error bit (SMOD0 bit set) Set by hardware when an invalid stop bit is detected. Clear to reset the error state, not cleared by a valid stop bit. Serial Mode bit 0 (SMOD0 bit cleared) Used with SM1 to select serial mode. Serial Mode bit 1 Used with SM0 to select serial mode. Multiprocessor Communication Enable bit Set to enable multiprocessor communication feature in mode 2 and 3. Clear to disable multiprocessor communication feature. SM0 SM1 SM2 8 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 Symbol REN Description Serial Reception Enable bit Set to enable serial reception. Clear to disable serial reception. Ninth bit to transmit in mode 2 and 3 Set to transmit a logic 1 in the 9th bit. Clear to transmit a logic 0 in the 9th bit. Ninth bit received in mode 2 and 3 Set by hardware if 9th bit received is logic 1. Clear by hardware if 9th bit received is logic 0. Transmit Interrupt Flag Set by hardware at the end of the 8th bit time in mode 0 or at the beginning of the stop bit in the other modes. Clear to acknowledge interrupt. Receive Interrupt Flag Set by hardware at the end of the 8th bit time in mode 0, see Figure 4 and Figure 5 in the other modes. Clear to acknowledge interrupt. TB8 RB8 TI RI The reset value of SCON is 0000 0000b. Timer 2 The Timer 2 in the TSC87C52 operates identically to the Timer 2 in the 80C52 but includes the following enhancements. For a complete understanding of the TSC87C52 Timer 2 please refer to the description in the 80C51 Hardware Description Guide. Auto–reload (up or down counter) Enhanced Timer 2 can now be programmed to count up or down when configured in its 16–bit auto–reload mode. This feature is controlled by the DCEN (Down Counter Enable) bit. DCEN is located in T2MOD at bit location 0 (see Table 5). Setting the DCEN bit enables Timer 2 to count up or down as shown in Figure 6. In this mode the T2EX pin controls the direction of count. A logic 1 at T2EX makes Timer 2 count up. The timer will overflow at FFFFh and set the TF2 bit. This overflow also causes the 16–bit value in RCAP2H and RCAP2L to be reloaded into the timer registers, TH2 and TL2, respectively. A logic 0 at T2EX makes Timer 2 count down. Now the timer underflows when TH2 and TL2 equal the values stored in RCAP2H and RCAP2L. The underflow sets the TF2 bit and causes FFFFh to be reloaded into the timer registers. The EXF2 bit toggles whenever Timer 2 overflows or underflows. In this operating mode, EXF2 does not flag an interrupt. (DOWN COUNTING RELOAD VALUE) FFh (8–bit) FFh (8–bit) TOGGLE EXF2 OSC ÷ 12 TL2 (8–bit) C/T2 TR2 COUNT DIRECTION 1= UP 0= DOWN TH2 (8–bit) TF2 TIMER 2 INTERRUPT T2 RCAP2L RCAP2H (8–bit) (8–bit) (UP COUNTING RELOAD VALUE) T2EX Figure 6 Timer 2 Auto–Reload Mode Up/Down Counter MATRA MHS Rev. C – 10 Sept 1997 9 Preliminary TSC87C52 Programmable Clock Output A 50% duty cycle clock can be programmed to come out on P1.0. This pin, besides being a regular I/O pin, has two alternate functions. It can be programmed to input external clock for Timer/Counter 2 or to output a 50% duty cycle clock from frequency fosc/218 to frequency fosc/4 (61 Hz to 4 MHz at a 16 MHz operating frequency). The clock–out frequency depends on the oscillator frequency and the reload value of Timer 2 capture registers RCAP2H and RCAP2L as shown in this equation: Clock–Out frequency= Oscillator frequency 4 ⋅ (65536 – RCAP2H,RCAP2L) To configure the Timer/Counter 2 as a clock generator, bit C/T2 in T2CON (bit location 1) must be cleared and bit T2OE must be set. Bit TR2 in T2CON starts and stops the timer (see Figure 7). T2OE is located in T2MOD at bit location 1 (see Table 5). In the clock–out mode, Timer 2 roll–overs will not generate an interrupt. This is similar to when Timer 2 is used as a baud–rate generator. It is possible to use Timer 2 as a baud–rate generator and as clock generator simultaneously. Note however, that the baud–rate and clock–out frequencies can not be determined independently from one another since they both use RCAP2H and RCAP2L. OSC ÷2 TL2 (8–bit) TH2 (8–bit) OVERFLOW C/T2 TR2 RCAP2L RCAP2H (8–bit) (8–bit) T2 ÷2 EXEN2 T2OE TIMER 2 INTERRUPT T2EX EXF2 Figure 7 Timer 2 Clock–Out Mode Table 5 T2MOD – Timer 2 Control Register (C9h) 7 – 6 – 5 – 4 – 3 – 2 – 1 T2OE 0 DCEN Symbol – T2OE Reserved Do not write 1 in these bits. Description Timer 2 Output Enable bit Set to program P1.0/T2 as clock output. Clear to program P1.0/T2 as clock input or I/O port. Decrement Enable bit Set to enable Timer 2 as up/down counter. Clear to disable Timer 2 as up/down counter. DCEN The reset value of T2MOD is XXXX XX00b. 10 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 EPROM EPROM Structure The TSC87C52 EPROM is divided in two different arrays: D D D the code array: the encryption array: 8 Kbytes. 64 bytes. In addition a third non programmable array is implemented: the signature array: 4 bytes. EPROM Lock System The program Lock system, when programmed, protects the on–chip program against software piracy. Encryption Array Within the EPROM array are 64 bytes of encryption array that are initially unprogrammed (all 1’s). Every time a byte is addressed during program verify, 6 address lines are used to select a byte of the encryption array. This byte is then exclusive–NOR’ed (XNOR) with the code byte, creating an encryption verify byte. The algorithm, with the encryption array in the unprogrammed state, will return the code in its original, unmodified form. When using the encryption array, one important factor needs to be considered. If a byte has the value FFh, verifying the byte will produce the encryption byte value. If a large block (>64 bytes) of code left unprogrammed, a verification routine will display the content of the encryption array. For this reason all the unused code bytes should be programmed with random values. This will ensure program protection. EPROM Programming Set–up modes In order to program and verify the EPROM or to read the signature bytes, the TSC87C52 is placed in specific set–up modes (see Figure 8). Control and program signals must be held at the levels indicated in Table 6. Definition of terms Address Lines: Data Lines: Control Signals: P1.0–P1.7, P2.0–P2.4 respectively for A0–A12 P0.0–P0.7 for D0–D7 RST, PSEN, P2.6, P2.7, P3.3, P3.6, P3.7. Program Signals: ALE/PROG, EA/VPP. Table 6 EPROM Set–up Modes Mode Program Code data Verify Code data Program Encryption Array Address 0–3Fh Read Signature Bytes RST 1 1 1 1 PSEN 0 0 0 0 ALE/ PROG 1 EA/VPP 12.75V 1 12.75V P2.6 0 0 0 0 P2.7 1 P3.3 1 0 P3.6 1 1 0 0 P3.7 1 1 1 0 1 1 0 1 1 MATRA MHS Rev. C – 10 Sept 1997 11 Preliminary TSC87C52 +5V PROGRAM SIGNALS* EA/VPP ALE/PROG P0.0–P0.7 RST PSEN P2.6 P2.7 P3.3 P3.6 P3.7 XTAL1 D0–D7 VCC P1.0–P1.7 P2.0–P2.4 A0–A7 A8–A12 CONTROL SIGNALS* 4 to 6 MHz VSS GND * See Table 6 for proper value on these inputs Figure 8 Set–up modes configuration Programming algorithm The Improved Quick Pulse algorithm is based on the Quick Pulse algorithm and decreases the number of pulses applied during byte programming from 25 to 5. To program the TSC87C52 the following sequence must be exercised: D D D D D Step 1: Input the valid address on the address lines. Step 2: Input the appropriate data on the data lines. Step 3: Activate the combination of control signals. Step 4: Raise EA/VPP from VCC to VPP (typical 12.75V). Step 5: Pulse ALE/PROG 5 times. Repeat step 1 through 5 changing the address and data for the entire array or until the end of the object file is reached (see Figure 9). Verify algorithm Code array verify must be done after each byte or block of bytes is programmed. In either case, a complete verify of the programmed array will ensure reliable programming of the TSC87C52. To verify the TSC87C52 code the following sequence must be exercised : D D D D Step 1: Activate the combination of program signals. Step 2: Input the valid address on the address lines. Step 3: Input the appropriate data on the data lines. Step 4: Activate the combination of control signals. Repeat step 2 through 4 changing the address and data for the entire array (see Figure 9). The encryption array cannot be directly verified. Verification of the encryption array is done by observing that the code array is well encrypted. 12 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 Programming Cycle A0–A12 D0–D7 Data In 100us 10us 4 5 Read/Verify Cycle Data Out ALE/PROG 12.75V 5V 0V 1 23 EA/VPP Control signals Figure 9 Programming and verification signal’s waveform Signature bytes The TSC87C52 has four signature bytes in location 30h, 31h, 60h and 61h. To read these bytes follow the procedure for EPROM verify but activate the control lines provided in Table 6 for Read Signature Bytes. Table 7 shows the content of the signature byte for the TSC87C52. Table 7 Signature bytes content Location 30h 31h 60h 61h Contents 58h 58h ADh XXh Comment Customer selection byte: TEMIC Family selection byte: C51 TSC87C52 Product revision number EPROM Erasure (Windowed Packages Only) Erasing the EPROM erases the code array and also the encryption array returning the parts to full functionality. Erasure leaves all the EPROM cells in a 1’s state. Erasure Characteristics The recommended erasure procedure is exposure to ultraviolet light (at 2537 Å) to an integrated dose at least 15 W–sec/cm2. Exposing the EPROM to an ultraviolet lamp of 12,000 µW/cm2 rating for 30 minutes, at a distance of about 25 mm, should be sufficient. Erasure of the EPROM begins to occur when the chip is exposed to light with wavelength shorter than approximately 4,000 Å. Since sunlight and fluorescent lighting have wavelengths in this range, exposure to these light sources over an extended time (about 1 week in sunlight, or 3 years in room–level fluorescent lighting) could cause inadvertent erasure. If an application subjects the device to this type of exposure, it is suggested that an opaque label be placed over the window. MATRA MHS Rev. C – 10 Sept 1997 13 Preliminary TSC87C52 Electrical Characteristics Absolute Maximum Ratings(1) Ambiant Temperature Under Bias: C = commercial . . . . . . . . . . . . . . . . . . . . 0_C to 70_C I = industrial . . . . . . . . . . . . . . . . . . . . . –40_C to 85_C Storage Temperature . . . . . . . . . . . –65_C to + 150_C Voltage on VCC to VSS . . . . . . . . . . . . –0.5 V to + 7 V Voltage on VPP to VSS . . . . . . . . . . . –0.5 V to + 13 V Voltage on Any Pin to VSS . . . –0.5 V to VCC + 0.5 V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . 1 W(2) Notice: 1.Stresses at or above those listed under “ Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions may affect device reliability. 2. This value is based on the maximum allowable die temperature and the thermal resistance of the package. 14 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 DC Parameters for Standard Voltage, commercial and industrial temperature range TA = 0°C to +70°C; VSS = 0V; VCC = 5V ± 10%; F = 0 to 33 MHz. TA = –40°C to +85°C; VSS = 0V; VCC = 5V ± 10%; F = 0 to 33 MHz. Symbol VIL VIH VIH1 VOL Parameter Input Low Voltage Input High Voltage except XTAL1, RST Input High Voltage, XTAL1, RST Output Low Voltage, ports 1, 2, 3 (6) Min –0.5 0.2 VCC + 0.9 0.7 VCC Typ Max 0.2 VCC – 0.1 VCC + 0.5 VCC + 0.5 0.3 0.45 1.0 Unit V V V V V V V V V V V V Test Conditions IOL = 100µA(4) IOL = 1.6mA(4) IOL = 3.5mA(4) IOL = 200µA(4) IOL = 3.2mA(4) IOL = 7.0mA(4) IOH = –10µA IOH = –30µA IOH = –60µA VCC = 5V ± 10% IOH = –200µA IOH = –3.2mA IOH = –7.0mA VCC = 5V ± 10% VOL1 Output Low Voltage, port 0, ALE, PSEN (6) 0.3 0.45 1.0 VOH Output High Voltage, ports 1, 2, 3 VCC – 0.3 VCC – 0.7 VCC – 1.5 VOH1 Output High Voltage, port 0, ALE, PSEN VCC – 0.3 VCC – 0.7 VCC – 1.5 V V V kΩ µA µA µA pF µA RRST IIL ILI ITL CIO IPD ICC RST Pulldown Resistor Logical 0 Input Current ports 1, 2 and 3 Input Leakage Current Logical 1 to 0 Transition Current, ports 1, 2, 3 Capacitance of I/O Buffer Power Down Current Power Supply Current (7) Freq = 1 MHz Freq = 6 MHz Icc op Icc idle Icc op Icc idle 50 90 (5) 200 –50 ±10 –650 10 Vin = 0.45V 0.45 < Vin < VCC Vin = 2.0V fc = 1MHz, TA = 25°C VCC = 2.0V to 5.5V(3) 10 (5) 50 1.8 1 (5) mA mA mA mA mA mA VCC = 5.5V(1) VCC = 5.5V(2) 10 4 Freq ≥ 12 MHz Icc op = 1.25 Frecq (MHz) + 5 mA Icc idle = 0.36 Freq (MHz) + 2.7 mA 13@12MHz 16@16MHz 5.5@12MHz 7@16MHz MATRA MHS Rev. C – 10 Sept 1997 15 Preliminary TSC87C52 DC Parameters for Low Voltage, commercial and industrial temperature range TA = 0°C to +70°C; VSS = 0V; VCC = 2.7V to 5V ± 10%; F = 0 to 16 MHz. TA = –40°C to +85°C; VSS = 0V; VCC = 2.7V to 5V ± 10%; F = 0 to 16 MHz. Symbol VIL VIH VIH1 VOL VOL1 VOH VOH1 IIL ILI ITL RRST CIO IPD ICC Parameter Input Low Voltage Input High Voltage except XTAL1, RST Input High Voltage, XTAL1, RST Output Low Voltage, ports 1, 2, 3 (6) Min –0.5 0.2 VCC + 0.9 0.7 VCC Typ Max 0.2 VCC – 0.1 VCC + 0.5 VCC + 0.5 0.45 0.45 Unit V V V V V V V Test Conditions IOL = 0.8mA(4) IOL = 1.6mA(4) IOH = –10µA IOH = –40µA Vin = 0.45V 0.45 < Vin < VCC Vin = 2.0V Output Low Voltage, port 0, ALE, PSEN (6) Output High Voltage, ports 1, 2, 3 Output High Voltage, port 0, ALE, PSEN Logical 0 Input Current ports 1, 2 and 3 Input Leakage Current Logical 1 to 0 Transition Current, ports 1, 2, 3 RST Pulldown Resistor Capacitance of I/O Buffer Power Down Current Power Supply Current (7) Active Mode 16MHz Idle Mode 16MHz TBD (5) TBD (5) TBD (5) 0.9 VCC 0.9 VCC –50 ±10 –650 50 90 (5) 200 10 TBD µA µA µA kΩ pF µA fc = 1MHz, TA = 25°C VCC = 2.0V to 5.5V(3) TBD TBD mA mA VCC = 3.3V(1) VCC = 3.3V(2) Notes for DC Electrical Characteristics 1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 13), VIL = VSS + 0.5V, VIH = VCC – 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see NO TAG). 2. Idle ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5ns, VIL = VSS + 0.5V, VIH = VCC–0.5V; XTAL2 N.C; Port 0 = VCC; EA = RST = VSS (see Figure 11). 3. Power Down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see NO TAG). 4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOLs of ALE and Ports 1 and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0 transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed 0.45V with maxi VOL peak 0.6V. A Schmitt Trigger use is not necessary. 5. Typicals are based on a limited number of samples and are not guaranteed. The values listed are at room temperature and 5V. 6. Under steady state (non–transient) conditions, IOL must be externally limited as follows: Maximum IOL per port pin: 10 mA Maximum IOL per 8–bit port: Port 0: 26 mA Ports 1, 2 and 3: 15 mA Maximum total IOL for all output pins: 71 mA If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test conditions. 7. For other values, please contact your sales office. 16 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 VCC ICC VCC P0 VCC RST (NC) CLOCK SIGNAL XTAL2 XTAL1 VSS All other pins are disconnected. EA RST (NC) XTAL2 XTAL1 VSS All other pins are disconnected. VCC ICC VCC P0 EA VCC VCC Figure 10 ICC Test Condition, Active Mode VCC ICC VCC P0 VCC Figure 12 ICC Test Condition, Power Down Mode VCC–0.5V 0.45V RST (NC) CLOCK SIGNAL XTAL2 XTAL1 VSS All other pins are disconnected. EA TCHCL TCLCH TCLCH = TCHCL = 5ns. 0.7VCC 0.2VCC–0.1 Figure 11 ICC Test Condition, Idle Mode Figure 13 Clock Signal Waveform for ICC Tests in Active and Idle Modes MATRA MHS Rev. C – 10 Sept 1997 17 Preliminary TSC87C52 AC Parameters Explanation of the AC Symbols Each timing symbol has 5 characters. The first character is always a “T” (stands for time). The other characters, depending on their positions, stand for the name of a signal or the logical status of that signal. The following is a list of all the characters and what they stand for. Example: TAVLL = Time for Address Valid to ALE Low. TLLPL = Time for ALE Low to PSEN Low. TA = 0 to +70_C; VSS = 0V VCC = 5V±10%; 0 to 12MHz TA = –40°C to +85°C; VSS = 0V; VCC = 5V ± 10%; F = 0 to 12MHz. (Load Capacitance for PORT 0, ALE and PSEN = 100pf; Load Capacitance for all other outputs = 80 pF.) External Program Memory Characteristics 0 to 12MHz Symbol TLHLL TAVLL TLLAX TLLIV TLLPL TPLPH TPLIV TPXIX TPXIZ TPXAV TAVIV TPXAV Parameter ALE pulse width Address Valid to ALE Address Hold After ALE ALE to Valid Instruction In ALE to PSEN PSEN Pulse Width PSEN to Valid Instruction In Input Instruction Hold After PSEN Input Instruction FloatAfter PSEN PSEN to Address Valid Address to Valid Instruction In PSEN Low to Address Float Min 2TCLCL – 40 TCLCL – 40 TCLCL – 30 Max Units Units ns ns ns 4TCLCL – 100 TCLCL – 30 3TCLCL – 45 3TCLCL – 105 0 TCLCL – 25 TCLCL – 8 5TCLCL – 105 10 ns ns ns ns ns ns ns ns ns External Program Memory Read Cycle 12 TCLCL TLHLL TLLIV TLLPL TPLPH ALE PSEN TLLAX TAVLL TPLIV TPLAZ TPXIX TPXAV TPXIZ PORT 0 INSTR IN A0–A7 TAVIV INSTR IN A0–A7 INSTR IN PORT 2 ADDRESS OR SFR–P2 ADDRESS A8–A15 ADDRESS A8–A15 18 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 External Data Memory Characteristics 0 to 12MHz Symbol TRLRH TWLWH TRLDV TRHDX TRHDZ TLLDV TAVDV TLLWL TAVWL TQVWX TQVWH TWHQX TRLAZ TWHLH Parameter RD Pulse Width WR Pulse Width RD to Valid Data In Data Hold After RD Data Float After RD ALE to Valid Data In Address to Valid Data In ALE to WR or RD Address to WR or RD Data Valid to WR Transition Data set–up to WR High Data Hold After WR RD Low to Address Float RD or WR High to ALE high Min 6TCLCL–100 6TCLCL–100 Max Units Units ns ns 5TCLCL–165 0 2TCLCL–60 8TCLCL–150 9TCLCL–165 3TCLCL–50 4TCLCL–130 TCLCL–50 7TCLCL–150 TCLCL–50 0 TCLCL–40 TCLCL+40 3TCLCL+50 ns ns ns ns ns ns ns ns ns ns ns ns External Data Memory Write Cycle TWHLH ALE PSEN TLLWL TWLWH WR TQVWX TLLAX TQVWH TWHQX PORT 0 A0–A7 TAVWL DATA OUT PORT 2 ADDRESS OR SFR–P2 ADDRESS A8–A15 OR SFR P2 MATRA MHS Rev. C – 10 Sept 1997 19 Preliminary TSC87C52 External Data Memory Read Cycle TWHLH ALE TLLDV PSEN TLLWL TRLRH RD TAVDV TLLAX TRHDX TRHDZ PORT 0 A0–A7 TAVWL TRLAZ DATA IN PORT 2 ADDRESS OR SFR–P2 ADDRESS A8–A15 OR SFR P2 Serial Port Timing – Shift Register Mode 0 to 12MHz Symbol TXLXL TQVHX TXHQX TXHDX TXHDV Parameter Serial port clock cycle time Output data set–up to clock rising edge Output data hold after clock rising edge Input data hold after clock rising edge Clock rising edge to input data valid Min 12TCLCL 10TCLCL–133 2TCLCL–117 0 Max Units Units ns ns ns ns 10TCLCL–133 ns Shift Register Timing Waveforms INSTRUCTION ALE TXLXL CLOCK TQVXH OUTPUT DATA WRITE to SBUF INPUT DATA CLEAR RI 0 TXHDV VALID VALID 0 1 2 3 4 5 6 7 8 TXHQX 1 2 TXHDX VALID VALID VALID VALID VALID 3 4 5 6 7 SET TI VALID SET RI 20 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 EPROM Programming and Verification Characteristics TA = 21°C to 27°C; VSS = 0V; VCC = 5V ± 10%. Symbol VPP IPP 1/TCLCL TAVGL TGHAX TDVGL TGHDX Parameter Programming Supply Voltage Min 12.5 Max 13 75 Units V mA MHz Programming Supply Current Oscillator Frquency Address Setup to PROG Low Adress Hold after PROG 4 48 TCLCL 48 TCLCL 48 TCLCL 48 TCLCL 48 TCLCL 10 10 90 6 Data Setup to PROG Low Data Hold after PROG (Enable) High to VPP TEHSH TSHGL TGHSL TGLGH TAVQV TELQV TEHQZ TGHGL VPP Setup to PROG Low VPP Hold after PROG PROG Width Address to Valid Data ENABLE Low to Data Valid Data Float after ENABLE µs µs 110 48 TCLCL 48 TCLCL µs 0 10 48 TCLCL µs PROG High to PROG Low EPROM Programming and Verification Waveforms PROGRAMMING P1.0–P1.7 P2.0–P2.4 VERIFICATION ADDRESS TAVQV ADDRESS P0 TDVGL TAVGL DATA IN 5 Pulses TGHDX TGHAX TGHSL DATA OUT ALE/PROG TSHGL TGLGH TGHGL VPP TEHSH EA/VCC CONTROL SIGNALS (ENABLE) VCC VCC TELQV TEHQZ MATRA MHS Rev. C – 10 Sept 1997 21 Preliminary TSC87C52 External Clock Drive Characteristics (XTAL1) Symbol TCLCL TCHCX TCLCX TCLCH TCHCL Parameter Oscillator Period High Time Low Time Rise Time Fall Time Min 30 5 5 Max Units ns ns ns 5 5 ns ns External Clock Drive Waveforms VCC–0.5V 0.45V 0.7VCC 0.2VCC–0.1 TCHCL TCLCX TCLCL TCHCX TCLCH AC Testing Input/Output Waveforms VCC –0.5 V INPUT/OUTPUT 0.45 V 0.2 VCC + 0.9 0.2 VCC – 0.1 AC inputs during testing are driven at VCC – 0.5 for a logic “1” and 0.45V for a logic “0”. Timing measurement are made at VIH min for a logic “1” and VIL max for a logic “0”. Float Waveforms FLOAT VOH – 0.1 V VOL + 0.1 V VLOAD VLOAD + 0.1 V VLOAD – 0.1 V For timing purposes as port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when a 100 mV change from the loaded VOH/VOL level occurs. IOL/IOH ≥ ± 20mA. 22 MATRA MHS Rev. C – 10 Sept 1997 Preliminary TSC87C52 Clock Waveforms STATE4 P1 P2 STATE5 P1 P2 STATE6 P1 P2 STATE1 P1 P2 STATE2 P1 P2 STATE3 P1 P2 STATE4 P1 P2 STATE5 P1 P2 INTERNAL CLOCK XTAL2 ALE THESE SIGNALS ARE NOT ACTIVATED DURING THE EXECUTION OF A MOVX INSTRUCTION EXTERNAL PROGRAM MEMORY FETCH PSEN P0 DATA SAMPLED FLOAT P2 (EXT) PCL OUT DATA SAMPLED FLOAT INDICATES ADDRESS TRANSITIONS PCL OUT DATA SAMPLED FLOAT PCL OUT READ CYCLE RD PCL OUT (IF PROGRAM MEMORY IS EXTERNAL) P0 DPL OR Rt OUT DATA SAMPLED FLOAT P2 INDICATES DPH OR P2 SFR TO PCH TRANSITION WRITE CYCLE WR PCL OUT (EVEN IF PROGRAM MEMORY IS INTERNAL) DPL OR Rt OUT DATA OUT P2 INDICATES DPH OR P2 SFR TO PCH TRANSITION PCL OUT (IF PROGRAM MEMORY IS EXTERNAL) P0 PORT OPERATION MOV PORT SRC OLD DATA P0 PINS SAMPLED MOV DEST P0 MOV DEST PORT (P1. P2. P3) (INCLUDES INTO. INT1. TO T1) SERIAL PORT SHIFT CLOCK TXD (MODE 0) P1, P2, P3 PINS SAMPLED P1, P2, P3 PINS SAMPLED NEW DATA P0 PINS SAMPLED RXD SAMPLED RXD SAMPLED This diagram indicates when signals are clocked internally. The time it takes the signals to propagate to the pins, however, ranges from 25 to 125ns. This propagation delay is dependent on variables such as temperature and pin loading. Propagation also varies from output to output and component. Typically though (TA=25_C fully loaded) RD and WR propagation delays are approximately 50ns. The other signals are typically 85ns. Propagation delays are incorporated in the AC specifications. MATRA MHS Rev. C – 10 Sept 1997 23 Preliminary TSC87C52 Ordering Information TSC 87C52 –20 C B R –12: 12 MHz version –16: 16 MHz version –20: 20 MHz version –25: 25 MHz version –33: 33 MHz version –L16: Low Power (VCC: 2.7–5.5V, Freq.: 0–16 MHz) Part Number 87C52: Programmable ROM OTP Packaging A: PDIL 40 B: PLCC 44 C: PQFP 44 (F1) D: PQFP 44 (F2) E: VQFP 44 (1.4mm) F: TQFP 44 (1mm) G: CDIL 40 (.6) H: LCC 44 I: CQPJ 44 EPROM–UV Erasable J: Window CDIL 40 K: Window CQPJ 44 Conditioning R: Tape & Reel D: Dry Pack B: Tape & Reel and Dry Pack TEMIC Semiconductor Microcontroller Product Line Temperature Range C: Commercial 0° to 70°C I: Industrial –40° to 85°C 24 MATRA MHS Rev. C – 10 Sept 1997 Preliminary