C541U Datasheet, PDF (11/63 Pages) Siemens Semiconductor Group – 8 BIT CMOS MICROCONTROLLER

C541U
XTAL2
XTAL1
ALE
PSEN
EA
RESET
D+
D-
Oscillator Watchdog
OSC & Timing
RAM
256 x 8
CPU
Progr. Watchdog
Timer
Timer 0
Timer 1
SSC (SPI) Interface
PLL
USB
Module
Interrupt Unit
OTP
Memory
8k x 8
Emulation
Support
Logic
Port 0
Port 1
Port 2
Port 3
Port 0
8-bit digit. I/O
Port 1
6-bit digit. I/O
Port 2
8-bit digit. I/O
Port 3
8-bit digit. I/O
C541U
Figure 4
Block Diagram of the C541U
Semiconductor Group
9