Digi RCM4000 - Manual (Page 32)

26 RabbitCore RCM4000
Table 2. RCM4000 Pinout Configurations
Pin Pin Name Default Use Alternate Use Notes
1 +3.3 V_IN
2 GND
3 /RES_OUT Reset output Reset input
Reset output from Reset
Generator
4 /IORD Input External read strobe
5 /IOWR Output External write strobe
6 /RESET_IN Input Input to Reset Generator
7 VBAT_EXT Battery input
8–15 PA[0:7] Input/Output
Slave port data bus
(SD7–SD1)
External I/O data bus
(ID7–ID1)
16 PB0 Input/Output
SCLKB
External I/O Address IA6
CLKB (used by RCM4000
A/D converter)
17 PB1 Input/Output
SCLKA
External I/O Address IA7
Programming port CLKA
18 PB2 Input/Output
/SWR
External I/O Address IA0
19 PB3 Input/Output
/SRD
External I/O Address IA1
20 PB4 Input/Output
SA0
External I/O Address IA2
21 PB5 Input/Output
SA1
External I/O Address IA3
22 PB6 Input/Output
/SCS
External I/O Address IA4
23 PB7 Input/Output
/SLAVATN
External I/O Address IA5