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| 型號(hào)： | X4165V8-2.7 |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | PLASTIC, TSSOP-8 |
| 文件頁(yè)數(shù)： | 19/22頁(yè) |
| 文件大?。?/td> | 496K |
| 代理商： | X4165V8-2.7 |
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X4163/5
Characteristics subject to change without notice.
6 of 22
REV 1.32 5/27/04
www.xicor.com
The X4163/5 resets itself after the rst byte is read.
The master should supply a stop condition to be con-
sistent with the bus protocol, but a stop is not required
to end this operation.
BP2, BP1, BP0: Block Protect Bits (Nonvolatile)
The Block Protect Bits, BP2, BP1 and BP0, determine
which blocks of the array are write protected. A write to
a protected block of memory is ignored. The block pro-
tect bits will prevent write operations to the following
segments of the array.
RWEL: Register Write Enable Latch (Volatile)
The RWEL bit must be set to “1” prior to a write to the
Control Register.
WEL: Write Enable Latch (Volatile)
The WEL bit controls the access to the memory and to
the Register during a write operation. This bit is a vola-
tile latch that powers up in the LOW (disabled) state.
While the WEL bit is LOW, writes to any address,
including any control registers will be ignored (no
acknowledge will be issued after the Data Byte). The
WEL bit is set by writing a “1” to the WEL bit and
zeroes to the other bits of the control register. Once
set, WEL remains set until either it is reset to 0 (by writ-
ing a “0” to the WEL bit and zeroes to the other bits of
the control register) or until the part powers up again.
Writes to the WEL bit do not cause a nonvolatile write
cycle, so the device is ready for the next operation
immediately after the stop condition.
WD1, WD0: Watchdog Timer Bits
The bits WD1 and WD0 control the period of the
Watchdog Timer. The options are shown below.
Write Protect Enable
These devices have an advanced Block Lock scheme
that protects one of ve blocks of the array when
enabled. It provides hardware write protection through
the use of a WP pin and a nonvolatile Write Protect
Enable (WPEN) bit.
The Write Protect (WP) pin and the Write Protect
Enable (WPEN) bit in the Control Register control the
programmable Hardware Write Protect feature. Hard-
ware Write Protection is enabled when the WP pin and
the WPEN bit are HIGH and disabled when either the
WP pin or the WPEN bit is LOW. When the chip is Hard-
ware Write Protected, nonvolatile writes to the block pro-
tected sections in the memory array cannot be written
and the block protect bits cannot be changed. Only the
sections of the memory array that are not block pro-
tected can be written. Note that since the WPEN bit is
write protected, it cannot be changed back to a LOW
state; so write protection is enabled as long as the WP
pin is held HIGH.
76
5
4
3
2
1
0
WPEN WD1 WD0 BP1
BP0
RWEL WEL BP2
BP2
BP1
BP0
Protected Addresses
(Size)
Array Lock
000
None (factory setting)
None
001
None
010
None
011
0000h - 7FFh (2K bytes)
Full Array (All)
100
000h - 03Fh (64 bytes)
First Page (P1)
101
000h - 07Fh (128 bytes)
First 2 pgs (P2)
110
000h - 0FFh (256 bytes)
First 4 pgs (P4)
111
000h - 1FFh (512 bytes)
First 8 pgs (P8)
WD1
WD0
Watchdog Time Out Period
00
1.4 seconds
01
600 milliseconds
10
200 milliseconds
11
disabled (factory setting)
Table 1. Write Protect Enable Bit and WP Pin Function
WP
WPEN
Memory Array not
Block Protected
Memory Array Block
Protected
WPEN Bit
Protection
LOW
X
Writes OK
Writes Blocked
Writes OK
Software
HIGH
0
Writes OK
Writes Blocked
Writes OK
Software
HIGH
1
Writes OK
Writes Blocked
Hardware
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| X4165V8-4.5A | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X4165V8I | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X4165V8I-2.7 | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
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