SLUSF73 Data sheet

SLUSF73 august 2023 TPSM8S6C24

PRODUCTION DATA

Package Options

Mechanical Data (Package|Pins)

MOY|45
- MPQF759

Thermal pad, mechanical data (Package|Pins)

Orderable Information

8.6.88 (FAh) MFR_SPECIFIC_42 (PASSKEY)

CMD Address	FAh
Write Transaction:	Write Word
Read Transaction:	Read Word
Format:	Unsigned Binary (2 bytes)
Phased:	No
NVM Back-up:	EEPROM
Updates:	At Boot-up

PASSKEY sets a User Programmable 16-bit passkey to disable write access to EXT_WRITE_PROTECT and User Store Non-Volatile Memory (NVM). When PASSKEY is set to 0000h, access to STORE_USER_ALL is enabled and writes to PASSKEY will update the active register value for PASSKEY. When PASSKEY is set to a value other than 0000h during boot-up, write access to EXT_WRITE_PROTECT and STORE_USER_ALL is disabled until the 16-bit word stored in NVM at boot-up is written to PASSKEY.

If 3 writes to PASSKEY are received that do not match the passkey without receiving a write that does match the passkey, PASSKEY access will be locked and all future writes to PASSKEY will be treated as invalid until the device receives a Power On Reset

To protect against unauthorized access to PASSKEY, reading PASSKEY will not respond with the passkey value but a fixed 16-bit word response based on the state of the PASSKEY

1. 0000h - PASSKEY is Unlocked

2. 000Fh - PASSKEY is Locked and no invalid writes have been made

3. 001Fh - PASSKEY is Locked and one invalid write has been made

4. 002Fh - PASSKEY is Locked and two invalid writes have been made

5. 00FFh - PASSKEY is Locked and three or more invalid writes have been made

Figure 8-94 (FAh) MFR_SPECIFIC_42 (NVM_LOCK) Register Map

15	14	13	12	11	10	9	8
RW	RW	RW	RW	RW	RW	RW	RW
PASSKEY

7	6	5	4	3	2	1	0
RW	RW	RW	RW	RW	RW	RW	RW
PASSKEY

LEGEND: R/W = Read/Write; R = Read only

Table 8-105 Register Field Descriptions

Bit	Field	Access	Reset	Description
15:0	PASSKEY	RW	NVM	Write: PASSKEY passkey Read: • 0000h - PASSKEY is Unlocked • 000Fh - PASSKEY is Locked and no invalid writes have been made • 001Fh - PASSKEY is Locked and one invalid write has been made • 002Fh - PASSKEY is Locked and two invalid writes have been made • 00FFh - PASSKEY is Locked and three or more invalid writes have been made

Bit

Field

Access

Reset

Description

15:0

PASSKEY

NVM

Write: PASSKEY passkey

Read:

• 0000h - PASSKEY is Unlocked

• 000Fh - PASSKEY is Locked and no invalid writes have been made

• 001Fh - PASSKEY is Locked and one invalid write has been made

• 002Fh - PASSKEY is Locked and two invalid writes have been made

• 00FFh - PASSKEY is Locked and three or more invalid writes have been made