C515C_9711 Datasheet, PDF (8/268 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

Introduction
C515C
1 Introduction
The C515C is an enhanced, upgraded version of the SAB 80C515A 8-bit microcontroller which
additionally provides a full CAN interface, a SPI compatible synchronous serial interface, extended
power save provisions, additional on-chip RAM, 64K byte of on-chip program memory, two new
external interrupts and RFI related improvements. With a maximum external clock rate of 10 MHz
it achieves a 600 ns instruction cycle time (1 µs at 6 MHz).
The C515C-8R contains a non-volatile 64k byte read-only program memory. The C515C-L is
identical to the C515C-8R, except that it lacks the on-chip program memory The C515C-8E is the
OTP version in the C515C microcontroller with a 64k byte one-time programmable (OTP) program
memory. With the C515C-8E fast programming cycles are achieved (1 byte in 100 µsec). Also
several levels of OTP memory protection can be selected. If compared to the C515C-8R and
C515C-L, the C515C-8E OTP version additionally provides two features :
– the wake-up from software power down mode can, additionally to the external pin P3.2/INT0
wake-up capability, also be triggered alternatively by a second pin P4.7/RXDC.
– for power consumption reasons the on-chip CAN controller can be switched off
The term C515C refers to all versions within this documentation unless otherwise noted.
Figure 1-1 shows the different functional units of the C515C and figure 1-2 shows the simplified
logic symbol of the C515C.
SSC (SPI)
Interface
Full-CAN
Controller
XRAM
2k x 8
RAM
256 x 8
Port 0
I/O
Oscillator
Watchdog
Power
Save Modes
Idle/
10 Bit ADC
(8 inputs)
Timer 2
T0
Port 1
I/O
CPU
8 Datapointer
8 Bit
USART
Power down
T1
Port 2
I/O
Slow down
Capture/Compare Unit
Port 7 Port 6 Port 5 Port 4
Program Memory
C515C-8R : 64k x 8 ROM
C515C-8E : 64k x 8 OTP
Port 3
I/O
I/O Analog/ I/O
I/O
Digital
Input
MCA03646
Figure 1-1
C515C Functional Units
Semiconductor Group
1-1
1997-11-01