Oki MSM83C154S - Manual

266 ¡ Semiconductor MSM80C154S/83C154S P0.0 to P0.7 P1.0 to P1.7 P2.0 to P2.7 P3.0 to P3.7 ALE PSEN EA Symbol Descriptipn Bidirectional I/O ports. They are also the data/address bus (input/output of data and output of lower 8-bit address when external memory is accessed).They are open-drain outputs ...

267 MSM80C154S/83C154S ¡ Semiconductor PIN Descriptions (Continued) RESET Symbol Descriptipn XTAL1 XTAL2 V CC V SS If this pin remains "H" for at least one machine cycle, the MSM80C154S/MSM83C154S is reset. Since this pin is pulled down internally, a power-on reset is achieved by simply conn...

268 ¡ Semiconductor MSM80C154S/83C154S REGISTERS Diagram of Special Function Registers REGISTER NAME BIT ADDRESS DIRECT ADDRESS b7 b5 b4 b3 b2 b1 b0 b6 IOCON B ACC PSW TH2 TL2 RCAP2H RCAP2L T2CON IP P3 IE P2 SBUF SCON P1 TH1 TH0 TL1 TL0 TMOD TCON PCON DPH DPL SP P0 FF F7 E7 D7 CF BF B7 AF A7 9F 97 8...

269 MSM80C154S/83C154S ¡ Semiconductor Timer/counter 0 mode setting NAME ADDRESS MSB LSB 7 6 5 4 3 2 1 0 BIT LOCATION FLAG FUNCTION TMOD 89H GATE C/ T M1 M0 GATE C/ T M1 M0 TMOD.0 M0 M1 M0 8-bit timer/counter with 5-bit prescalar. 0 0 16-bit timer/counter. 0 1 8-bit timer/counter with 8-bit auto rel...

271 MSM80C154S/83C154S ¡ Semiconductor External interrupt 0 signal is used in level-detect mode when this bit is "0" and in trigger detect mode when "1". NAME ADDRESS MSB LSB 7 6 5 4 3 2 1 0 BIT LOCATION FLAG FUNCTION TCON 88H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 TCON.0 IT0 Interrupt requ...

273 MSM80C154S/83C154S ¡ Semiconductor Interrupt control bit for external interrupt 0.Interrupt disabled when bit is "0".Interrupt enabled when bit is "1". NAME ADDRESS MSB LSB 7 6 5 4 3 2 1 0 BIT LOCATION FLAG FUNCTION IE 0A8H EA — ET2 ES ET1 EX1 ET0 EX0 IE.0 EX0 Interrupt control b...

274 ¡ Semiconductor MSM80C154S/83C154S Interrupt priority bit for external interrupt 0.Priority is assigned when bit is "1". NAME ADDRESS MSB LSB 7 6 5 4 3 2 1 0 BIT LOCATION FLAG FUNCTION IP 0B8H PCT — PT2 PS PT1 PX1 PT0 PX0 IP.0 PX0 IP.1 PT0 IP.2 PX1 IP.3 PT1 IP.4 PS IP.5 PT2 Reserved bit....

277 MSM80C154S/83C154S ¡ Semiconductor Capture mode is set when TCLK + RCLK = "0" and CP/ RL2 = "1". 16-bit auto reload mode is set when TCLK + RCLK = "0" and CP/ RL2 = "0". CP/ RL2 is ignored when TCLK + RCLK = "1". NAME ADDRESS MSB LSB 7 6 5 4 3 2 1 0 BIT LO...

278 ¡ Semiconductor MSM80C154S/83C154S MEMORY MAPS Program Area 0 0 2 B H 43 Timer interrupt 2 start 0 0 2 3 H 35 S I/O interrupt start 0 0 1 B H 27 Timer interrupt 1 start 0 0 1 3 H 19 External interrupt 1 start 0 0 0 1 H 1 0 0 0 0 H 0 CPU reset start 0 0 0 3 H 3 External interrupt 0 start 0 0 0 2 ...

280 ¡ Semiconductor MSM80C154S/83C154S 7F 77 6F 67 5F 57 4F 47 3F 37 2F 27 1F 17 0F 07 7E 76 6E 66 5E 56 4E 46 3E 36 2E 26 1E 16 0E 06 7D 75 6D 65 5D 55 4D 45 3D 35 2D 25 1D 15 0D 05 7C 74 6C 64 5C 54 4C 44 3C 34 2C 24 1C 14 0C 04 7B 73 6B 63 5B 53 4B 43 3B 33 2B 23 1B 13 0B 03 7A 72 6A 62 5A 52 4A ...

281 MSM80C154S/83C154S ¡ Semiconductor ABSOLUTE MAXIMUM RATINGS Parameter Symbol Condition Rating Unit Supply voltage Input voltage Storage temperature V CC Ta=25°C –0.5 to 7 V V I Ta=25°C –0.5 to V CC +0.5 V T STG — –55 to +150 °C RECOMMENDED OPERATING CONDITIONS Parameter Symbol Condition Range Un...

282 ¡ Semiconductor MSM80C154S/83C154S ELECTRICAL CHARACTERISTICS DC Characteristics 1 Meas- uring circuit 0.2 V CC –0.1 Parameter Symbol Condition Min. Typ. Max. Unit Input Low Voltage V IL — –0.5 — V V CC +0.5 Input High Voltage V IH Except XTAL1, EA , 0.2 V CC +0.9 — V and RESET V CC +0.5 Input H...

283 MSM80C154S/83C154S ¡ Semiconductor Maximum power supply current normal operation I CC (mA) V CC 4 V 5 V 6 V Freq 2.2 3.1 4.1 1 MHz 3.9 5.2 7.0 3 MHz 12.0 16.0 20.0 12 MHz 16.0 20.0 25.0 16 MHz 19.0 25.0 30.0 20 MHz V CC 4.5 V 5 V 6 V Freq 25.0 29.0 35.0 24 MHz Maximum power supply current idle m...

284 ¡ Semiconductor MSM80C154S/83C154S DC Characteristics 2 — Output High Voltage V OH1 I OH =–20 m A 0.75 V CC — V (PORT 0, ALE, PSEN ) –40 Logical 0 Input Current/Logical 1 Output Current/(PORT 1, 2, 3) I IL / I OH V I =0.1 V –5 –10 m A V O =0.1 V –300 Logical 1 to 0 Transition I TL V I =1.9 V — –...

286 ¡ Semiconductor MSM80C154S/83C154S V CC V SS INPUT OUTPUT V IH V IL (*2) V A I O 1 V CC V SS INPUT OUTPUT (*1) V 2 V CC V SS INPUT OUTPUT V IH V IL (*2) V A (*3) 3 V CC V SS INPUT OUTPUT V IH V IL A 4 A (*3) (*3) Measuring circuits *1: Repeated for specified input pins.*2: Repeated for specified...

287 MSM80C154S/83C154S ¡ Semiconductor AC Characteristics (1) External program memory access AC characteristics Parameter Symble Unit Min. Max. 1 to 24 MHz Variable clock from 41.7 1000 ns t CLCL XTAL1, XTAL 2 Oscillation Cycle 2t CLCL -40 — ns t LHLL ALE Signal Width 1t CLCL -15 — ns t AVLL Address...

288 ¡ Semiconductor MSM80C154S/83C154S t LHLL t AVLL t LLPL t PLPH t LLIV t PLIV t PXAV t PXIZ t LLAX t AZPL t AVIV t PXIX A0 to A7 INSTR IN A0 to A7 PORT0 PORT2 A8 to A15 A8 to A15 A8 to A15 PSEN ALE (2) External program memory read cycle

289 MSM80C154S/83C154S ¡ Semiconductor (3) External data memory access AC characteristics *1 The variable check is from 0 to 24 MHz when the external check is used.*2 For 2.2 £ V CC <4 V Parameter Symbol Unit Min. Max. 1 to 24 MHz Variable clock from 41.7 1000 ns t CLCL XTAL1, XTAL2 Oscillator Cy...

292 ¡ Semiconductor MSM80C154S/83C154S t XLXL t QVXH t XHQX t XHDV t XHDX VALID VALID VALID VALID VALID VALID VALID VALID MACHINECYCLE ALE SHIFTCLOCK OUTPUTDATA INPUTDATA

293 MSM80C154S/83C154S ¡ Semiconductor (7) AC Characteristics Measuring Conditions 1. Input/output signal V OH V OL V OH V OL V IH V IL V IH V IL TEST POINT * The input signals in AC test mode are either V OH (logic "1") or V OL (logic "0") input signals where logic "1" corre...

294 ¡ Semiconductor MSM80C154S/83C154S Timing Diagram Basic timing ACC & RAM S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 PCL PCL PCL PCL PCH PCH PCH PCH PCH DPH & PORT DATA PCH ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,, ,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,...