
1
OUTLINE
S1C33205 PRODUCT PART
EPSON
A-1
1 Outline
The S1C33205 is a Seiko Epson original 32-bit microcomputer. It features high speed, low power consumption,
and low-voltage operation, and is ideal for portable products that require high-speed data processing.
The S1C33205 consists of an S1C33000 32-bit RISC type CPU as its core, peripheral circuits including an SDRAM
controller, bus control unit, DMA controller, interrupt controller, timers, serial interface, and A/D converter, and also
RAM. A high-speed oscillation circuit and PLL, and a low-speed clock input circuit, are also included, supporting
advanced operation, power-saving operation, and high-speed realtime clock functions. Use of the internal MAC
(multiplication and accumulation) function in combination with the A/D converter also facilitates the design of
systems requiring DSP functions, such as speech recognition and synthesis applications.
Table 1.1
Model Lineup
Model
Package
Internal RAM
Internal ROM
Data bus I/F
S1C33205F00A2*
QFP15-128pin
8K bytes
None
CMOS/LVTTL
Note: The end of the S1C33205 subcode is not related to model identification.
1.1 Features
Core CPU
Seiko Epson original 32-bit RISC CPU S1C33000 built-in
Basic instruction set: 105 instructions (16-bit fixed size)
Sixteen 32-bit general-purpose register
32-bit ALU and 8-bit shifter
Multiplication/division instructions and MAC (multiplication and accumulation) instruction are available
20 ns of minimum instruction execution time at 50 MHz operation
Internal memory
RAM:
8K bytes
Internal peripheral circuits
Oscillation circuit:
High-speed (OSC3) oscillation circuit
33 MHz max.
Crystal/ceramic oscillator or external clock input
Low-speed (OSC1) oscillation circuit
32.768 kHz typ.
Crystal oscillator or external clock input
Timers:
8-bit timer
6 channels
16-bit timer
6 channels
Watchdog timer
(16-bit timer 0's function)
Clock timer
1 channel (with alarm function)
Serial interface:
4 channels (clock-synchronous system, asynchronous system and IrDA
interface are selectable)
A/D converter:
10 bits
× 8 channels
DMA controller:
High-speed DMA
4 channels
Intelligent DMA
128 channels
Interrupt controller:
Possible to invoke DMA
Input interrupt
10 types (programmable)
DMA controller interrupt
5 types
16-bit programmable timer interrupt 12 types
8-bit programmable timer interrupt
4 types
Serial interface interrupt
6 types
A/D converter interrupt
1 type
Clock timer interrupt
1 type
General-purpose input
Shared with the I/O pins for internal peripheral circuits
and output ports:
Input port
13 bits
I/O port
29 bits