ST90R30 Datasheet | STMicroelectronics

features - 40 fully programmable 1/0 pins - Up to 8 external plus 1 non-maskable interrupts - 16 bit Timer with 8 bit Prescaler, able to be used as a Watchdog Timer - Two 16 bit Multifunction Timers, each with an 8 bit prescaler and 13 operating modes - 8 channel 8 bit Analog to Digital Converter, with Analog Watchdogs and external references - Serial munications Interface with asynchronous and synchronous capability - Rich Instruction Set and 14 Addressing modes - Division-by-Zero trap generation - Versatile development tools, including assembler, linker, C-piler, archiver, graphic orinted debugger and hardware emulators - Real Time Operating System - patible with ST9030 8K ROM device (also available in windowed and One Time Programmable EPROM packages) (Ordering Information at the end of the Datasheet) March 1994 187/195 203 Figure 1. 80 Pin PQFP Package) 1 2 3 65 64 24 25 VROA1649 Table 1. ST90R30Q Pin Description Pin Name 1 AVss 2 AVss 3 NC 4 P44/AIN4 5 P57 6 P56 7 P55 8 P54 9 INT7 10 INTO 11 P53 12 NC 13 P52 14 P51 15 P50 16 OSCOUT 17 Vss 18 Vss 19 NC 20 OSCIN 21 RESET 22 P37/T10UTB 23 P36/T11NB 24 P35f T10UTA Pin Name 25 P34f T11NA 26 P33/TOOUTB 27 P32/TOINB 28 P31/TOOUTA 29 P30/P/D/TOINA 30 A15 31 A14 32 NC 33 A13 34 A12 35 A11 36 A10 37 A9 38 AS 39 POO/AO/DO 40 P01/A1/D1 Pin Name 64 P20/NMI 63 NC 62 Vss 61 P70/SIN 60 P71/SOUT P72/INT4/TXCLK /CLKOUT P73/INT5 /RXCLK/ADTRG 57 P74/P/D/INT6 56 P75/WAIT P76/WDOUT /BUSREQ 54 P77/WDIN /BUSACK 53 R!W 52 NC 51 DS 50 AS 49 NC 48 Voo 47 Voo 46 P07/A7/D7 45 P06/A6/D6 44 P05/A5/D5 43 P04/A4/D4 42 P03/A3/D3 41 P02/A2/D2 Pin...