20-101-1217 Rabbit Semiconductor, 20-101-1217 Datasheet - Page 34
![MODULE RABBITCORE RCM3229](/photos/6/74/67475/20-101-1217_sml.jpg)
20-101-1217
Manufacturer Part Number
20-101-1217
Description
MODULE RABBITCORE RCM3229
Manufacturer
Rabbit Semiconductor
Specifications of 20-101-1217
Module/board Type
MPU Core Module
For Use With/related Products
RCM3229
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1146
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Notes
1. When using pins 33–34 on header J1 to drive LEDs, you must use an external buffer to
2. The VRAM voltage is temperature-dependent. If the VRAM voltage drops below about
Locations R45, R46, R53, R57, and R74 allow the population of 0 Ω resistors (jumpers)
that will be used to enable future options. These locations are currently unused.
28
drive these external LEDs. These pins are not connected on the RCM3220, which does
not have the LEDs installed.
1.2 V to 1.5 V, the contents of the battery-backed SRAM may be lost. If VRAM drops
below 1.0 V, the 32 kHz oscillator could stop running. Pay careful attention to this volt-
age if you draw any current from this pin.
Pin
20
21
22
23
24
25
26–27
28
29
30
31
32
33
34
PG7
PG6
PG5
PG4
/IOWR
/IORD
SMODE0,
SMODE1
/RESET_IN
VRAM
VBAT_EXT
+3.3V
GND
n.c.
GND
Pin Name
Table 2. RCM3200 Pinout Configurations (continued)
Input/Output
Input/Output
Input/Output
Input/Output
Output
Output
(0,0)—start executing at address zero
(0,1)—cold boot from slave port
(1,0)—cold boot from clocked Serial Port A
SMODE0 =1, SMODE1 = 1
Cold boot from asynchronous Serial Port A at
2400 bps (programming cable connected)
Input
Output
3 V battery Input
Input
Default Use
RXE
TXE
RCLKE
TCLKE
Alternate Use
Serial Clock E input
Serial Clock E ouput
External write strobe
External read strobe
See Notes below table
Serial Port E
Also connected to
programming cable
Input to Reset Generator
Minimum battery
voltage 2.85 V
3.15–3.45 V DC
Reserved for future use
RabbitCore RCM3200
Notes
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