28
Intellicom (OP6600/OP6700)
3.4 Memory
3.4.1 SRAM
The Intellicom is designed to accept 32K to 512K of SRAM packaged in an SOIC case.
The standard models come with 128K of SRAM.
Figure 12 shows the locations and the
jumper settings for the jumpers at JP1 used to set the SRAM size. The “jumpers” are 0
surface-mounted resistors.
Figure 12. Intellicom Jumper Settings
for SRAM and Flash EPROM Size
3.4.2 Flash Memory
The Intellicom is also designed to accept 128K to 512K of flash memory packaged in a
TSOP case.
The Intellicom OP6700 comes with two 256K flash memory chips, and the Intellicom
OP6600 comes with one 256K flash memory.
Figure 12 shows the locations and the
jumper settings for the jumpers at JP2 and JP3 used to set the flash memory size. The
“jumpers” are 0
surface-mounted resistors.
NOTE: Rabbit recommends that any customer applications should not be constrained by
the sector size of the flash EPROM since it may be necessary to change the sector size
in the future.
A Flash Memory Bank Select jumper configuration option exists at JP5 with 0
surface-
mounted resistors. This option, used in conjunction with some configuration macros, allows
Dynamic C to compile two different co-resident programs for the upper and lower halves of
the 256K flash in such a way that both programs start at logical address 0000. This is useful
for applications that require a resident download manager and a separate downloaded pro-
gram. See Technical Note 218, Implementing a Serial Download Manager for a 256K
Flash, for details.
3.4.3 Dynamic C BIOS Source Files
The Dynamic C BIOS source files handle different standard RAM and flash EPROM sizes
automatically.
3
2
1
3
2
1
128K
JP1
512K
SRAM
3
2
1
JP2
3
2
1
128K/256K
JP2
512K
Flash EPROM
R38
90
15
65
40
U4
C18
U3
TP1
R9
R8
R10
C4
R4
R2
R7
R1
+
C2
Q1
R3
JP1
C6
U1
R11
R12
R13
R5
2
1
J2
Q2
R15
R14
R6
C5
+
C3
C9
R28
C10
C1
1
C12
TP2
Y1
R27
JP2
JP3
U5
C13
TP10
R18
R17
C7
R16
R19
R20
R21
R22
TP18
TP17
TP19
TP16
TP15
TP14
TP13
TP12
TP11
R86
R85
U6
C19
C20
C17
TP20
15
J3
C21
4 X 20 LCD
GND
2 X 20 LCD
SRAM
Flash
EPROM
Flash
EPROM
JP1
FD
No jumper = 32K
FD
JP3
Note that the OP6600 has
only one flash EPROM
installed at U5, and so there
are no jumpers at JP3.