EMC EM78612 Uživatelský manuál stáhnout pdf (Strana 5)

EM78612

Universal Serial Bus Microcontroller Series

This specification may change without further notice. 5 3/5/2003 (V1.0)

6 Function Block Diagram

Oscillator

Timing

Control

Built-in

Prescaler

(TCC)

WDT

Timer

DATA & CONTROL BUS

OSCI OSCO

(PC)

Stack1

ALU

ACC

(Status)

ROM

Instruction

Decoder

Interrupt

Control

Reset &

Sleep &

Wake up

Control

3.3V

Regulator

USB

Device

Controller

VDD V3.3

Transceiver

D+ D-

TCCWDT

RAM

(RSR)

Stack2

Stack3

Stack4

Stack5

Prescaler

I/O

Port 7

P70

P71

P72

P73

I/O

Port 6

P60

P61

P62

P63

P64

P65

P66

P67

I/O

Port 5

P50/D+/Clk

P51/D-/Data

Figure 7 EM78612 Series Function Block Diagram

7 Function Description

The EM78612memory is organized into four spaces, namely; User Program Memory in

2048*13 bits MASK ROM space, Data Memory in 80 bytes SRAM space, and USB

Application FIFOs (for EndPoint0 and EndPoint1). Furthermore, several registers are used

for special purposes.

8.1 Program Memory

The program space of the EM78612 is 2K bytes, and is divided into two pages. Each page is

1K bytes long. After Reset, the 12-bit Program Counter (PC) points to location zero of the

program space.

1 2 3 4 5 6 7 8 9 10 ... 28 29

EM78612 1
R3 (Status Register) 7

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