AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 289

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

Device Identification Register
Version
Part Number
Manufacturer ID
Device ID
Reset Register
4250C–CAN–03/04
Capture-DR controller state. The Bypass Register may be used to shorten the scan
chain on a system when the other devices are to be tested.
Figure 140 shows the structure of the Device Identification Register.
Figure 140. The Format of the Device Identification Register
Version is a 4-bit number identifying the revision of the component. The relevant version
number is shown in Table 104.
Table 104. JTAG Version Numbers
The part number is a 16-bit code identifying the component. The JTAG Part Number for
AT90CAN128 is listed in Table 105.
Table 105. AVR JTAG Part Number
The Manufacturer ID is a 11-bit code identifying the manufacturer. The JTAG manufac-
turer ID for ATMEL is listed in Table 106.
Table 106. Manufacturer ID
The full Device ID is listed in Table 107 following the AT90CAN128 version.
Table 107. Device ID
The Reset Register is a test data register used to reset the part. Since the AVR tri-states
Port Pins when reset, the Reset Register can also replace the function of the unimple-
mented optional JTAG instruction HIGHZ.
A high value in the Reset Register corresponds to pulling the external Reset low. The
part is reset as long as there is a high value present in the Reset Register. Depending
on the fuse settings for the clock options, the part will remain reset for a reset time-out
period (refer to “System Clock” on page 35) after releasing the Reset Register. The out-
Bit
Device ID
Version
AT90CAN128 revision A
Part Number
AT90CAN128
Manufacturer
ATMEL
Version
AT90CAN128 revision A
MSB
31
Version
4 bits
28 27
Part Number
16 bits
JTAG Version Number (Hex)
JTAG Manufactor ID (Hex)
JTAG Part Number (Hex)
JTAG Device ID (Hex)
12 11
0x0978103F
0x9781
0x01F
0x0
AT90CAN128
Manufacturer ID
11 bits
1
LSB
1-bit
289
0
1