X5083SI INTERSIL [Intersil Corporation], X5083SI Datasheet - Page 5

• Manufacturer Part Number: X5083SI
• Description: CPU Supervisor with 9Kbit SPI EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

To set the new V
threshold voltage to the V
programming voltage V
followed by a write of Data 00h to address 01h. CS going
HIGH on the write operation initiates the V
sequence. Bring WP LOW to complete the operation.
Note: This operation also writes 00h to array address 01h.
Resetting the V
This procedure is used to set the V
level. For example, if the current V
V
V
SCK
TRIP
TRIP
SCK
WP
WP
CS
CS
SI
SI
must be 4.0V, then the V
is reset, the new V
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7
TRIP
TRIP
voltage, apply the desired V
WREN
WREN
P
Voltage
06h
06h
. Then send a WREN command,
TRIP
CC
pin and tie the WP pin to the
is something less than 1.7V.
5
FIGURE 1. SET V
TRIP
FIGURE 2. RESET V
TRIP
TRIP
must be reset. When
is 4.4V and the new
to a “native” voltage
TRIP
programming
TRIP
0 1 2 3 4 5 6 7 8 9 10
0 1 2 3 4 5 6 7 8 9 10
TRIP
LEVEL SEQUENCE (V
TRIP
LEVEL SEQUENCE (V
V
V
Write
02h
P
P
Write
02h
= 15-18V
= 15-18V
X5083
This procedure must be used to set the voltage to a lower
value.
To reset the new V
threshold voltage to the Vcc pin and tie the WP pin to the
programming voltage V
followed by a write of data 00h to address 03h. CS going
HIGH on the write operation initiates the V
sequence. Bring WP LOW to complete the operation.
Note: This operation also writes 00h to array address 03h.
CC
= DESIRED V
CC
> 3V. WP = 15-18V)
Address
16 Bits
16 Bits
0001h
Address
0003h
20 21 22 23
20 21 22 23
TRIP
TRIP
VALUE)
P
voltage, apply the desired V
. Then send a WREN command,
Data
00h
Data
00h
TRIP
September 16, 2005
programming
TRIP
FN8127.2