87C751 Philips Semiconductors, 87C751 Datasheet
87C751
Available stocks
Related parts for 87C751
87C751 Summary of contents
Page 1
... OTP/ROM, I Product specification Supersedes data of 1998 Jan 19 IC20 Data Handbook INTEGRATED CIRCUITS 2 C, low pin count 1998 May 01 ...
Page 2
... OTP/ROM low pin count DESCRIPTION The Philips 83C751/87C751 offers the advantages of the 80C51 architecture in a small package and at low cost. The 8XC751 Microcontroller is fabricated with Philips high-density CMOS technology. Philips epitaxial substrate minimizes CMOS latch-up sensitivity. ...
Page 3
... OTP S83C751–1A28 S87C751–1A28 OTP S83C751–2A28 S87C751–2A28 OTP S83C751–4A28 S87C751–4A28 OTP S83C751–5A28 S87C751–5A28 OTP S83C751–1DB S87C751–1DB OTP S83C751–4DB S87C751–4DB OTP NOTE: 1. OTP = One Time Programmable EPROM. 1998 May 01 TEMPERATURE RANGE C ...
Page 4
... I2CFG I2STA TCON ALU I2DAT I2CON IE TH0 TL0 RTH RTL PSW INTERRUPT, SERIAL PORT AND TIMER BLOCKS PORT 1 PORT 3 LATCH LATCH PORT 1 PORT 3 DRIVERS DRIVERS P1.0–P1.7 P3.0–P3.7 4 Product specification 83C751/87C751 ROM/ EPROM PROGRAM ADDRESS REGISTER BUFFER PC INCRE- MENTER PROGRAM COUNTER DPTR SU00316 ...
Page 5
... Port 3 also functions as the address input for the EPROM memory location to IL permits a power-on RESET using only an external capacitor After the device is reset, a 10-bit serial sequence, sent LSB first, applied to RESET, places 5 Product specification 83C751/87C751 applied for PP ...
Page 6
... V program voltage (for 87C751 only Program current (for 87C751 only Supply current (see Figure 2) CC NOTES TO DC ELECTRICAL CHARACTERISTICS ON NEXT PAGE. 1998 May 10% for 87C751 10% for 83C751 TEST CONDITIONS TEST CONDITIONS I = 1.6mA 3.2mA –60 A ...
Page 7
... May 01 must be externally limited as follows: OL 10mA (NOTE: This spec.) 26mA 67mA ; X2, X1 n.c.; RST = 5ns, V CLCH CHCL , t = 5ns, V CLCH CHCL = 5V 10% for 87C751 10% for 83C751 12MHz CLOCK MIN Product specification 83C751/87C751 unless otherwise 0.5V – 0.5V; X2 n.c.; ...
Page 8
... TYP ACTIVE MAX IDLE TYP IDLE I 4MHz 8MHz 12MHz 16MHz FREQ Figure 2. I vs. FREQ CC values taken at V max and worst case temperature Typical I values taken 5.0V and Product specification 83C751/87C751 t CHCX SU00297 SU00298 ...
Page 9
... Simultaneous interrupt conditions are resolved by a single-level, fixed priority as follows: Highest priority: Pin INT0 Counter/timer flag 0 Pin INT1 Timer I 2 Lowest priority: Serial I 9 Product specification 83C751/87C751 Special Function Registers Internal Data RAM SU00299 000 003 00B 013 01B 023 2 C subsystem ...
Page 10
... MOVC instruction. DPTR may also be manipulated as two independent 8-bit registers. ADDRESS MSB – – – BIT(S) 7:0 10 Product specification 83C751/87C751 2 C registers BIT ADDRESS LSB – – – – – ...
Page 11
... B4 B3 – – – – – RS1 RS0 GATE C IE0 11 Product specification 83C751/87C751 RESET LSB VALUE 00H 00H 00H 00H – CT1 CT0 0000xx00B – CT1 CT0 STP MASTER – ...
Page 12
... Timer I has a timeout interval of 1024 machine cycles when used as a fixed-rate timer RTL RTH Figure 4. 83C751 Counter/Timer Block Diagram 12 Product specification 83C751/87C751 TF TR IE0 IT0 IE1 high, and and by reset bus and also to detect 2 C bus for an inordinately long period of time while ...
Page 13
... SCL, except at idle slave. DRDY is cleared by writing CDR = writing or reading the I2DAT register. The following low period on SCL is stretched until the program responds by clearing DRDY. 13 Product specification 83C751/87C751 2 C bus. See special function register I2CFG 2 C operation is enabled, this counter is 2 ...
Page 14
... CXA Writing “Clear Xmit Active” clears the Transmit Active state. (Reading the I2DAT register also does this.) 1998 May 01 83C751/87C751 Regarding Transmit Active Transmit Active is set by writing the I2DAT register writing I2CON with XSTR = 1 or XSTP = 1. The I the SDA line low when Transmit Active is set, and the ARL bit will only be set to 1 when Transmit Active is set ...
Page 15
... SCL transition with a value dependent upon CT1/CT0. The preload value is chosen such that a minimum SCL high or low time has elapsed when Timer I reaches a count of 008 (the actual value preloaded into Timer minus the osc/12 count). 15 Product specification 83C751/87C751 ...
Page 16
... EA X Symbol Position EA IE.7 – IE.6 – IE.5 EI2 IE.4 ETI IE interrupt EX1 IE.2 ET0 IE.1 EX0 IE.0 16 Product specification 83C751/87C751 operation. C, and is cleared by transitions on SCL, and by TIMEOUT PERIOD 1023 cycles 1022 cycles 1021 cycles 1020 cycles EI2 ETI EX1 ET0 EX0 Function Disables all interrupts ...
Page 17
... The V signal may now be driven to the V PP 87C751 in the verify mode. (Port 1 is now used as an output port). After four machine cycles (48 clock periods), the contents of the addressed location in the EPROM array will appear on Port 1. The next programming cycle may now be initiated by placing the ...
Page 18
... Table 6. When programming either security bit not necessary to provide address or data information to the 87C751 on ports 1 and 3. Verification occurs in a similar manner using the RESET serial stream shown in Table 6. Port 3 is not required to be driven and the results of the verify operation will appear on ports 1 ...
Page 19
... ADSTA DVGL GHDX VALID DATA DATA TO BE PROGRAMMED PROGRAM MODE Figure 7. Program/Verify Cycle 2 C components conveys a license under the Philips’ system provided the system conforms to the 19 Product specification 83C751/87C751 MAX UNIT 6 MHz s s 110 s 48t CLCL s 48t CLCL 5V ...
Page 20
... Philips Semiconductors 80C51 8-bit microcontroller family 2 2K/64 OTP/ROM low pin count DIP24: plastic dual in-line package; 24 leads (300 mil) 1998 May 01 83C751/87C751 20 Product specification SOT222-1 ...
Page 21
... Philips Semiconductors 80C51 8-bit microcontroller family 2 2K/64 OTP/ROM low pin count PLCC28: plastic leaded chip carrer; 28 leads; pedestal 1998 May 01 83C751/87C751 21 Product specification SOT261-3 ...
Page 22
... Philips Semiconductors 80C51 8-bit microcontroller family 2 2K/64 OTP/ROM low pin count SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm 1998 May 01 83C751/87C751 22 Product specification SOT340-1 ...
Page 23
... Philips Semiconductors 80C51 8-bit microcontroller family 2 2K/64 OTP/ROM low pin count 1998 May 01 83C751/87C751 NOTES 23 Product specification ...
Page 24
... Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 1998 May 01 [1] Copyright Philips Electronics North America Corporation 1998 Document order number: 24 Product specification 83C751/87C751 All rights reserved. Printed in U.S.A. Date of release: 05-98 9397 750 03845 ...