C511 Datasheet, PDF (14/43 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

C511 / C513
Table 4
Pin Definitions and Functions in Programming Mode (C513A-H only) (cont’d)
Symbol
PMS0
PMS1
PMS2
PMS3
Pin Number I/O*) Function
P-LCC-44
35
I
Programming Mode Select
33
PMS0-3 are used to put the C513A-H into the program-ming
32
mode. In normal mode the programming mode select pins have
10
the meaning as shown in the table below. PMS0-3 must be set
to the logic level as described in the table below.
V_SS
V_CC
N.C.
22
–
44
–
1-9, 11-14, –
23-31, 34
*) I = Input
O = Output
Normal Mode
Pin Names
EA
ALE
PSEN
RESET
Progr. Mode
Pin Names
PMS0
PMS1
PMS2
PMS3
Required
Logic Level
0
1
0
1
Circuit ground potential
Power supply terminal for all operating modes
No connection
These pins must not be connected.
Semiconductor Group
14