C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 8

• Manufacturer Part Number: C509-L_97
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

1Introduction
The C509-L is a high-end microcontroller in the Siemens SAB-C500 8-bit microcontroller family. lt
is based on the well-known industry standard 8051 architecture; a great number of enhancements
and new peripheral features extend its capabilities to meet the extensive requirements of new
applications. Further, the C509-L is a superset of the Siemens SAB 80C517/80C517A 8-bit
microcontroller thus offering an easy upgrade path for SAB 80C517/80C517A users.
The high performance of the C509-L microcontroller is achieved by the C500-Core with a maximum
operating frequency of 16 MHz internal (and external) CPU clock. While maintaining all the features
of the SAB 80C517A, the C509-L is expanded by one I/O port, in its compare/capture capabilities,
by A/D converter functions, by additional 1 KByte of on-chip RAM (now 3 KByte XRAM) and by an
additional user-selectable CMOS port structure. The C509-L is mounted in a P-MQFP-100-2
package.
Figure 1-1 shows the different functional units of the C509-L and figure 1-2 shows the simplified
logic symbol of the C509-L.
Figure 1-1
C509-L Functional Units
Semiconductor Group
C509
HW/SW
Modes
Power
Down
Improved functionality in
comparison to the SAB 80C517A.
Watchdog
Watchdog
Oscillator
8-Bit USART
8-Bit UART
MDU
Timer 1
Comp.
Port 9
I/O
T 2
analog/
256 x 8
Port 8
RAM
input
digit.
T 0
T 1
10-Bit ADC
1-1
analog/
Port 7
input
digit.
C500-Core
(8-Dataptr)
CPU
Port 6
CCU
I/O
Boot ROM 512 x 8
Timer 1
3 K x 8
Comp.
XRAM
Port 5
I/O
Port 4
Port 4
Port 4
Port 4
Port 4
I/O
Introduction
MCB02493
1997-10-01
I/O
I/O
I/O
I/O
I/O
C509-L