C505-2RM SIEMENS [Siemens Semiconductor Group], C505-2RM Datasheet - Page 56
C505-2RM
Manufacturer Part Number
C505-2RM
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C505-2RM.pdf
(85 pages)
Basic Programming Mode Selection
The basic programming mode selection scheme is shown in figure 28.
Figure 28
Basic Programming Mode Selection
Semiconductor Group
V
Clock
(XTAL1 / XTAL2)
RESET
PSEN
PMSEL1,0
PROG
PRD
PSEL
PALE
EA / V
CC
During this period signals
are not actively driven
PP
"0"
0,1
56
0 V
Stable
"1"
"0"
"1"
"0"
Ready for access
mode selection
C505A / C505CA
MCS03639
C505 / C505C
V
V
5 V
PP
IH
1997-12-01
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