mcu-memory STC 89 1280 IAP 8/16/32/64k SRAM ISP P0 8051 8 E2PROM IAP Data Flash STC P2 + P4.0--P4.3 MAX810 I/O " " UART A/D 3 P I I 4 S A EMI P P E2P ROM STC 89C51 RC 4K 512 2K STC 89C52 RC 8K 512 2K STC 89C53 RC 15K 512 STC 89C54 RD+ 16K 1280 16K STC 89C55 RD+ 20K 1280 16K STC 89C58 RD+ 32K 1280 16K STC 89C516 RD+ 64K 1280 4K 512 2K 2K STC 89LE52 RC 8K 512 STC 89LE53 RC 15K 512 STC 89LE54 RD+ 16K 1280 16K STC 89LE58 RD+ 32K 1280 16K STC 89LE516RD+ 64K 1280 512 STC 89LE516AD 64K " "" " 0.1uF 0.1uF C1+ Vcc V+ GND 15 3 C1- T1OUT 14 4 C2+ R1IN 13 5 C2- R1OUT 12 6 V- T1IN 11 T2IN 10 R2OUT 9 7 T2OUT 8 R2IN 16 1 2 Vcc Gnd PC_RxD (COM Pin2) 10uF PC_TxD (COM Pin3) MCU_RxD (P3.0) P3.0 MCU_TxD (P3.1) VCC P3.1 XTAL2 89C52RC 89C58RD+ 89LE52RC XTAL1 89LE516RD+ GND RESET Vcc Vcc 0.1uF STC STC3232,STC232,MAX232,SP232 P4 STC 89LE51 RC P3 A / D STC 89 P1 ---- , " " , " " , 1280 8/16/32/64k SRAM IAP ISP P0 8051 E2PROM Data Flash IAP STC 8 + P4.0--P4.3 P1 P2 P3 MAX810 " " UART A/ D 3 I/O P4 A / D " "" " " " " " -- "" 1 0.1uF C1+ 2 V+ GND 15 3 C1- T1OUT 14 C2+ R1IN 13 C2- R1OUT 12 6 V- T1IN 11 7 T2OUT T2IN 10 8 R2IN R2OUT Gnd PC_RxD (COM Pin2) PC_TxD (COM Pin3) 4 5 Vcc Vcc 16 9 MCU_TxD (P3.1) MCU_RxD (P3.0) 1 C1+ Vcc 16 Vcc 2 V+ GND 15 Gnd 3 C1- T1OUT 14 0.1uF C2+ R1IN 13 C2- R1OUT 12 6 V- T1IN 11 7 T2OUT T2IN 10 8 R2IN R2OUT PC_RxD (COM Pin2) PC_TxD (COM Pin3) 4 5 9 MCU_RxD (P3.0) MCU_TxD (P3.1) 0.1uF 1 C1+ Vcc 16 2 V+ GND 15 3 C1- T1OUT 14 C2+ R1IN 13 R1OUT 12 5 C2- 6 V- 7 T2OUT 8 R2IN Gnd PC_RxD (COM Pin2) T2IN 10 9 PC_TxD (COM Pin3) T1IN 11 R2OUT MCU_RxD (P3.0) 4 Vcc MCU_TxD (P3.1) STC6344 89C51RC 89C54RD+ 1 89C58RD+ 89LE516AD GND Vcc VCC 2 RESET 3 RESET VCC VCC RESET STC810 100K <1.25V GND MR PFI PFO RESET Interrupt PFO=0 STC813L STC6345 10K <1.25V VCC VCC RESET RESET GND RESET PFO Interrupt 100K PFI VCC STC89C51RC STC89C52RC STC89C53RC STC89C54RD+ STC89C58RD+ STC89C516RD+ RESET MR WDO VCC RESET GND WDI I/O PFI PFO Interrupt <1.25V PFO=0 PFO=0 RESET uC / DSP STC6342 STC809 1 uC / DSP VCC 10K 3 <1.25V 2 RESET STC706S GND MR PFI PFO <1.25V uC / DSP Interrupt VCC uC / DSP MR RESET VCC RESET GND NC PFI PFO WDO VCC RESET GND WDI I/O PFI PFO Interrupt VCC S T C 708 RESET 100K 100K PFO=0 MR RESET GND Vcc RESET VCC VCC RESET <1.25V RESET Interrupt PFO=0 PFO=0 RESET uC / DSP RS-232 STC STC STC232, STC3232 1 C1+ Vcc 16 Vcc GND 15 Gnd 0.1uF 2 V+ C1- T1OUT 14 4 C2+ R1IN 13 5 C2- R1OUT 12 6 V- C1+ Vcc 16 Vcc 2 V+ GND 15 Gnd 7 T2OUT 8 R2IN VCC 3 C1- T1OUT 14 4 C2+ R1IN 13 5 C2- R1OUT 12 6 V- MCU_RxD (P3.0) P3.0 MCU_TxD (P3.1) P3.1 89C52RC XTAL2 89C58RD+ 89LE52RC XTAL1 89LE516RD+ GND RESET T2IN 10 PC_TxD (COM Pin3) P3.0 R2OUT 9 PC_RxD (COM Pin2) MCU_RxD (P3.0) T1IN 11 1 0.1uF PC_TxD (COM Pin3) MCU_TxD (P3.1) RS-232 STC232, STC3232 PC_RxD (COM Pin2) 3 STC STC 7 T2OUT 8 R2IN T1IN 11 T2IN 10 R2OUT 9 P3.1 89LE516AD 89LE516X2 P1.0 P1.1 " " " " " " " " " " "" Symbol Function EXTRAM Internal/External RAM access /RAM 0: EXT_RAM. RD+ 00H3FFH(1024),MOVX @DPTR,400H 400H MOVX @Ri00HFFH RC 00HFFH(256),MOVX @DPTR,100H 100H MOVX @Ri00HFFH 1: External data memory access. ,RAMMOVX @DPTR / MOVX @Ri 8052 ALEOFF Disable/enable ALE. 0: ALE is emitted at a constant rate of 1/3 the oscillator frequency in 6 clock mode, 1/6 fosc in 12 clock mode ALE1/612,6 1/3. 1: ALE is active only during a MOVX or MOVC instruction. ALEMOVX or MOVC,EMI. " " " " " " " " "" " " "" "" */ "" "" " " "" " " " " " " " " www.mcu-memory.com "" "" "" """""" """""" """" ... ... ... ... ... ... / " " " " " " " " " " " " " "" " " "" " / / / / x * ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... / -- / / / """" / """" / """" / """""" x -- x -- -- x / / x -- x " " " "" " " " " " " " " " " " " " " " 512 8/16/32/64k IAP SRAM ISP P0 8051 8 STC + P4.0--P4.3 P1 P2 P3 UART A/D 3 I/O P4 A / D STC Vcc 16 Vcc 2 V+ GND 15 Gnd 3 C1- T1OUT 14 1 C1+ 0.1uF 4 C2+ R1IN 13 5 C2- R1OUT 12 T1IN 11 7 T2OUT T2IN 10 8 R2IN PC_RxD (COM Pin2) PC_TxD (COM Pin3) R2OUT 9 6 V- GND 3 1 VCC RESET STC 810R 2 MCU_RxD (P3.0) MCU_TxD (P3.1) """" """" "" " " / "1" / = 256 x Vin / Vcc Vi n Vc c " " " " " " " " " " " " "" " " "" "" "" " "" " " "" " x , 20-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP-20) , 20-lead, 0.300" Wide, Plastic Gull WIng Small Outline (SOIC-20 / SOP-20) Dimensions in Inches and (Millimeters) Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-001 AD x -- Vcc 0.1uF 1 C1+ Vcc 16 Vcc 2 V+ GND 15 Gnd 3 C1- T1OUT 14 C2+ R1IN 13 5 C2- R1OUT 12 6 V- T1IN 11 7 T2OUT T2IN 10 PC_RxD (COM Pin2) "" PC_TxD (COM Pin3) 0.1uF 0.1uF 8 R2IN R2OUT 9 4 Vcc " " Vcc 0.1uF 1 C1+ Vcc 16 2 V+ GND 15 C1- T1OUT 14 4 C2+ R1IN 13 5 C2- R1OUT 12 6 V- T1IN 11 7 T2OUT T2IN 10 Gnd PC_RxD (COM Pin2) "" PC_TxD (COM Pin3) 0.1uF 0.1uF 8 R2IN R2OUT 9 3 Vcc Vcc " " 12 / 1 / 12/ 1/ "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" 12/ 1/ L L 12/ 1/ "" "" "" "" 12/ 1/ "" " " I/O ( 8051 I/O , 20mA , 230A 20mA (Open Drain) I/O ( 8051 I/O , 20mA , 230A 20mA (Open Drain) I/O P1.x A/D 8051 I/O , 20mA , 230A 20mA I/OA/D (Open Drain) I/OA/D I/O ( 8051 I/O , 20mA , 230A 20mA (Open Drain) "" "" "" "" I/O P1.x A/D 8051 I/O , 20mA , 230A 20mA I/O A/D (Open Drain) I/O A/D "1" / ) = 256 x Vin / Vcc Vi n Vc c "" """""" """""" "" "" = (12 x Pre-scale x 32768) / 11059200 = Pre-scale x 393216 / 11059200 ... ... ... ... ... ... "" " " " "" " " " " " " " " " " " " " " " / " " " " " " " " " " " " " "" " " "" " / / / / x * ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... CMOD CCON - - 0 0 0 0 Write to CCAPnL Write to CCAPnH 0 - 1 - 0 0 1 0 0 1 0 - - 0 0 1 1 0 - 1 0 0 0 0 1 0 Vcc 0.1uF 1 C1+ Vcc 16 Vcc 2 V+ GND 15 Gnd 3 C1- T1OUT 14 C2+ R1IN 13 5 C2- R1OUT 12 6 V- T1IN 11 7 T2OUT T2IN 10 "" PC_TxD (COM Pin3) 0.1uF 0.1uF 8 R2IN R2OUT 9 4 PC_RxD (COM Pin2) Vcc " """ " " " " " " " " " " " " " " " "" " " " " " " " " " "" "" ---- SPI SPCT L - 8 5 h SPI SPSTAT - 8 4h SPI SPSTAT - 8 4h "" "" SPI SPDAT - 86h -- " " ...... "" l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l ---- l l l l l l l l "" "" " " " " " " -- -- ---- -- -- -- -- " " x " " " " "" "" "" "" "" """""" " " """"" " "" "" "" l l ...... ...... l l " "" "" " " """ "" "" " " """""" "" " " "" ---- ---- ---- ---- "" " " ...... "" "" "" "" "" "" ...... x x x x x x x x x x x x x "" / ............... ............... x ............... ............... x ............... ............... x "" / " " " " x x x x x x x x ...