Technical Information

ELECTRICAL SPECIFICATIONS

CPU

80C320, 22. 1184 Mhz clock

Memory

RPBASIC-52, 32K RO M, jumperable for 64K. Type: 27C256 Access time: 80 ns or faster .

Program ming and data is 32K or 128K RAM standard, 512K Op tional.

RAM optionally battery backed up. Battery life is 5-10 years depending upon RAM size, type, and oper ating temperature and time.

Maximum BASIC progra m is 62K

Battery backed using D S1216DM , w hich also acts as a real time clock. Can also use DS1213C or D to battery back ram.

D i gi ta l I/O

The RPC -320 has 34 digital I/O lines. 24 are from J3, which is a ge neral pur pose por t.

The specifications below a re for digital I/ O at P6 and J3 except for the eight high current lines at J3.

Drive curr ent	2.5 ma m aximum per line,
	sink or source . TTL
	compatible.
Output low voltage	0.45V m ax at 2.5 mA , 1V
	max at 15 mA for opto rack.
Output high v olts	2.4V m inimum, sink or source
	at rated cu rren t.

All digital input lines are TTL compatible.

High cu rrent ou tput at J3

8 of the 24 lines can drive up to 500 ma at 50V. Refer to CHAPTER 6, D IGITAL AND OPTO PORTS for limitations.

High current output at L8

L8 sinks up to 2 ampe res at 50 V olts. Sw itching is through a "zero" ohm FE T switch.

SECTION 15 Opto isolated input ISOA/ISOB

Isolated voltage s to 250 volts peak may be a pplied to this input. A series resistor is necessary for voltages above 12V.

Keypad input

10 lines accept a 16 position matrix keypad. Scanning and debounce performe d in RPBASIC-52.

Display output

14 digital and 6 power and ground lines used to control LCD , VF , and LC D graphics displays. D isplays supported in RPBASIC-52.

Serial ports

Two RS-232D serial ports. All have RxD , TxD , and CTS lines. COM 0 has only these lines. COM1 also has RTS. COM 1 configurable to RS-232 or RS-422/485. Term ination network for RS-422/485 available. Baud rates fr om 300 to 3 8.4 K are pr ogram mable. Length fixed at 8 bits, no parity, 1 start and sto p bit.

EPROM and programmer

Accepts 29C 256, 29 C010, 29C040 or equivalent flash EPR OM from Atmel.

Size: 32K (29C256), 128K(29C010), 512K(29C040)

Calendar/Clock

Optional DS-1216DM installed in socket U5. Accur acy to 1 m inute/m onth

Supported by RPBASIC

Expected life 3 to 5 years depending upon RAM size installed, temperature, and operating time.

Watchdog timer, reset

Watch dog timer resets C PU whe n enabled. Time between re sets is 380 ms or 2.8 seconds Push button reset. Exter nal reset through W10.

Power requireme nts

+ 5 ±5% at 95 ma operating.

Current consumption is less than 5 ma in IDLE 2 mode, all components installed.

Curr ent is less than 1 ma when analog and RS-485 chips (U14, 15,16, and 9) are removed.

RS-232 voltages generated on card.

Current consumption does not include any opto-modules or other acc essories.

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