ATMEGA64L-8MI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATMEGA64L-8MI

8-bit AVR® Microcontroller with 64K Bytes In-System Programmable Flash

Atmel Corporation 

ATmega64(L)

Bypass Register

The Bypass Register consists of a single Shift Register stage. When the Bypass Regis-

ter is selected as path between TDI and TDO, the register is reset to 0 when leaving the

Capture-DR controller state. The Bypass Register can be used to shorten the scan

chain on a system when the other devices are to be tested.

Device Identification Register Figure 125 shows the structure of the Device Identification Register.

Figure 125. The Format of the Device Identification Register

Bit

Device ID

MSB

LSB

31 28

27

12

11

1

0

Version

4 bits

Part Number

16 bits

Manufacturer ID

1

11 bits

1-bit

Version

Version is a 4-bit number identifying the revision of the component. The relevant version

number is shown in Table 100.

Table 100. JTAG Version Numbers

Version

ATmega64 Revision A

JTAG Version Number (Hex)

0x0

Part Number

The part number is a 16-bit code identifying the component. The JTAG Part Number for

ATmega64 is listed in Table 101.

Table 101. AVR JTAG Part Number

Part Number

ATmega64

JTAG Part Number (Hex)

0x9602

Manufacturer ID

The Manufacturer ID is a 11-bit code identifying the manufacturer. The JTAG manufac-

turer ID for Atmel is listed in Table 102.

Table 102. Manufacturer ID

Manufacturer

Atmel

JTAG Man. ID (Hex)

0x01F

2490G–AVR–03/04

255

Share Link: