C501G-1E SIEMENS [Siemens Semiconductor Group], C501G-1E Datasheet - Page 7

• Manufacturer Part Number: C501G-1E
• Description: 8-Bit Single-Chip Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

1
The C501-L, C501-1R, and C501-1E described in this document are compatible (also pin-
compatible) with the 80C52 and can be used in typical 80C52 applications.
The C501-1R contains a non-volatile 8K 8 read-only program memory, a volatile 256 8 read/write
data memory, four ports, three 16-bit timers/counters, a seven source, two priority level interrupt
structure and a serial port. The C501-L is identical, except that it lacks the program memory on
chip. The C501-1E contains a one-time programmable (OTP) program memory on chip. The term
C501 refers to all versions within this specification unless otherwise noted.
Figure 1-1
C501G Functional Units
Semiconductor Group
Introduction
T2
Saving
Modes
Power
T0
T1
8K x 8 ROM (C501-1R)
8K x 8 OTP (C501-1E)
CPU
256 x 8
RAM
1-1
USART
Port 0
Port 1
Port 2
Port 3
MCA03238
/O
/O
/O
/O
Introduction
C501