C8051F020 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F020

8K ISP FLASH MCU Family

Silicon Laboratories 

C8051F020/1/2/3

Figure 24.4. FLASHADR: JTAG Flash Address Register

Bit15

Reset Value

0x0000

Bit0

This register holds the address for all JTAG Flash read, write, and erase operations. This register autoincrements

after each read or write, regardless of whether the operation succeeded or failed.

Bits15-0: Flash Operation 16-bit Address.

Figure 24.5. FLASHDAT: JTAG Flash Data Register

Reset Value

0000000000

Bit9

Bit0

This register is used to read or write data to the Flash memory across the JTAG interface.

Bits9-2:

Bit1:

Bit0:

DATA7-0: Flash Data Byte.

FAIL: Flash Fail Bit.

0: Previous Flash memory operation was successful.

1: Previous Flash memory operation failed. Usually indicates the associated memory location

was locked.

BUSY: Flash Busy Bit.

0: Flash interface logic is not busy.

1: Flash interface logic is processing a request. Reads or writes while BUSY = 1 will not

initiate another operation

270

Rev. 1.4

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