RCM2000 datasheet(30/80 Pages) DIGI

30 / 80 page

RabbitCore RCM2000

1–13

A[12:0]

Output

Rabbit 2000 address bus

STAT

Output (Status)

Output

PC0

Output

TXD

PC1

Input

RXD

PC2

Output

TXC

PC3

Input

RXC

PC4

Output

TXB

PC5

Input

RXB

PC6

Output

TXA

PC7

Input

RXA

PC6

Output

TXA

Connected to program-

ming port

PC7

Input

RXA

23–26

PD[0:3]

Bitwise or parallel

programmable I/O, can be

driven or open-drain output

16 mA sourcing and

sinking current at full AC

switching speed

PD4

ATXB output

PD5

ARXB input

PD6

ATXA output

PD7

ARXA input

31, 40

GND

32, 39

VCC

VBATR

3 V battery input

VRAM

2.1 V output

100 k

Ω minimum load

35–36

SMODE0,

SMODE1

(0,0)—start executing at

address zero

No programming cable

attached

SMODE0 =1, SMODE1 = 1

Cold boot from asynchro-

nous serial port A at 2400

bps (programming cable

connected)

(0,1)—cold boot from slave

port

(1,0)—cold boot from

clocked serial port A

With programming cable

attached

/RES_OUT

Reset Output

/RES_IN

Reset Input

Table 2. RCM2000 Pinout Configurations (continued)

Pin Name

Default Use

Alternate Use

Notes

RCM2000 Datasheet(PDF) 30 Page - Digi International Inc.

RCM2000 Datasheet(HTML) 30 Page - Digi International Inc.

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