C8051F360 datasheet(142/288 Pages) SILABS

142 / 288 page

C8051F360/1/2/3/4/5/6/7/8/9

142

Rev. 1.0

SFR Definition 13.1.

Bits 7–2: UNUSED. Read = 000000b, Write = don't care.

Bit 1:

PSEE: Program Store Erase Enable.

Setting this bit allows an entire page of the Flash program memory to be erased provided

the PSWE bit is also set. After setting this bit, a write to Flash memory using the MOVX

instruction will erase the entire page that contains the location addressed by the MOVX

instruction. The value of the data byte written does not matter. Note: The Flash page con-

taining the Read Lock Byte and Write/Erase Lock Byte cannot be erased by software.

0: Flash program memory erasure disabled.

1: Flash program memory erasure enabled.

Bit 0:

PSWE: Program Store Write Enable.

Setting this bit allows writing a byte of data to the Flash program memory using the MOVX

write instruction. The location must be erased prior to writing data.

0: Write to Flash program memory disabled. MOVX write operations target External RAM.

1: Write to Flash program memory enabled. MOVX write operations target Flash memory.

SFR Page:

SFR Address:

0x8F

R/W

Reset Value

–

PSEE

PSWE

00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

PSCTL: Program Store Read/Write Control

SFR Definition 13.2. FLKEY: Flash Lock and Key

Bits 7–0: FLKEY: Flash Lock and Key Register

Write:

This register provides a lock and key function for Flash erasures and writes. Flash writes

and erases are enabled by writing 0xA5 followed by 0xF1 to the FLKEY register. Flash

writes and erases are automatically disabled after the next write or erase is complete. If any

writes to FLKEY are performed incorrectly, or if a Flash write or erase operation is attempted

while these operations are disabled, the Flash will be permanently locked from writes or era-

sures until the next device reset. If an application never writes to Flash, it can intentionally

lock the Flash by writing a non-0xA5 value to FLKEY from software.

Read:

When read, bits 1-0 indicate the current Flash lock state.

00: Flash is write/erase locked.

01: The first key code has been written (0xA5).

10: Flash is unlocked (writes/erases allowed).

11: Flash writes/erases disabled until the next reset.

SFR Page:

SFR Address:

0xB7

R/W

Reset Value

00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

C8051F360 Datasheet(PDF) 142 Page - Silicon Laboratories

C8051F360 Datasheet(HTML) 142 Page - Silicon Laboratories

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL