REV. 1.0.2 HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE For PowerSave, the UART internally isolates all of these" />
參數(shù)資料
型號: XR16M2651IL32-F
廠商: Exar Corporation
文件頁數(shù): 33/51頁
文件大小: 0K
描述: IC UART FIFO 32B DUAL 32QFN
標(biāo)準(zhǔn)包裝: 490
特點: *
通道數(shù): 2,DUART
FIFO's: 32 字節(jié)
規(guī)程: RS232,RS422
電源電壓: 1.62 V ~ 3.63 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 32-QFN 裸露焊盤(5x5)
包裝: 托盤
XR16M2651
39
REV. 1.0.2
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
For PowerSave, the UART internally isolates all of these inputs (except the modem inputs) therefore
eliminating any unnecessary external buffers to keep the inputs steady. SEE”POWERSAVE FEATURE” ON
AC ELECTRICAL CHARACTERISTICS
Unless otherwise noted: TA = -40o to +85oC, Vcc=1.62 - 3.63V, 70 pF load where applicable
SYMBOL
PARAMETER
LIMITS
1.8V ± 10%
MIN
MAX
LIMITS
2.5V ± 10%
MIN
MAX
LIMITS
3.3V ± 10%
MIN
MAX
UNIT
XTAL1
UART Crystal Oscillator
24
MHz
ECLK
External Clock
32
50
64
MHz
TECLK
External Clock Time Period
15
10
7
ns
TAS
Address Setup Time (16 mode)
0
ns
TAH
Address Hold Time (16 mode)
0
ns
TCS
Chip Select Width (16 mode)
65
40
35
ns
TRD
IOR# Strobe Width (16 mode)
65
40
35
ns
TDY
Read Cycle Delay (16 mode)
65
40
35
ns
TRDV
Data Access Time (16 mode)
60
35
30
ns
TDD
Data Disable Time (16 mode)
25
ns
TWR
IOW# Strobe Width (16 mode)
65
40
35
ns
TDY
Write Cycle Delay (16 mode)
65
40
35
ns
TDS
Data Setup Time (16 mode)
20
10
ns
TDH
Data Hold Time (16 mode)
3
ns
TADS
Address Setup (68 Mode)
0
ns
TADH
Address Hold (68 Mode)
0
ns
TRWS
R/W# Setup to CS# (68 Mode)
0
ns
TRDA
Read Data Access (68 mode)
60
35
30
ns
TRDH
Read Data Disable (68 mode)
25
ns
TWDS
Write Data Setup (68 mode)
20
10
ns
TWDH
Write Data Hold (68 Mode)
3
ns
TRWH
CS# De-asserted to R/W# De-asserted (68 Mode)
5
ns
TCSL
CS# Width (68 Mode)
65
40
35
ns
TCSD
CS# Cycle Delay (68 Mode)
65
40
35
ns
TWDO
Delay From IOW# To Output
50
ns
TMOD
Delay To Set Interrupt From MODEM Input
50
ns
TRSI
Delay To Reset Interrupt From IOR#
50
ns
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