Bus Cycles AC Timings; VDD = 4.5 to 5.5 V," />
參數(shù)資料
型號: TSC80251G2D-L16CER
廠商: Atmel
文件頁數(shù): 41/77頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 16MHZ LO VOLT 44VQFP
標(biāo)準(zhǔn)包裝: 1,500
系列: 8x251
核心處理器: C251
芯體尺寸: 8/16-位
速度: 16MHz
連通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器類型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LQFP
包裝: 帶卷 (TR)
其它名稱: TSC80251G2DL16CER
46
AT/TSC8x251G2D
4135F–8051–11/06
Table 39.
Bus Cycles AC Timings; VDD = 4.5 to 5.5 V, TA = -40 to 85°C
Notes: 1. Specification for PSEN# are identical to those for RD#.
2. If a wait state is added by extending ALE, add 2TOSC.
3. If wait states are added by extending RD#/PSEN#/WR#, add 2NTOSC (N = 1..3).
Symbol
Parameter
12 MHz
16 MHz
24 MHz
Unit
Min
Max
Min
Max
Min
Max
TOSC
1/FOSC
83
62
41
ns
TLHLL
ALE Pulse Width
78
58
38
ns(2)
TAVLL
Address Valid to ALE Low
78
58
37
ns(2)
TLLAX
Address hold after ALE Low
19
11
3
ns
TRLRH(1) RD#/PSEN# Pulse Width
162
121
78
ns(3)
TWLWH WR# Pulse Width
165
124
81
ns(3)
TLLRL(1) ALE Low to RD#/PSEN# Low
22
14
6
ns
TLHAX
ALE High to Address Hold
99
70
40
ns(2)
TRLDV(1) RD#/PSEN# Low to Valid Data
146
104
61
ns(3)
TRHDX(1) Data Hold After RD#/PSEN# High
0
ns
TRHAX
(1)
Address Hold After RD#/PSEN#
High
000
ns
TRLAZ
(1)
RD#/PSEN# Low to Address Float
0
ns
TRHDZ1
Instruction Float After RD#/PSEN#
High
45
40
30
ns
TRHDZ2 Data Float After RD#/PSEN# High
215
165
115
ns
TRHLH1
RD#/PSEN# high to ALE High
(Instruction)
49
43
31
ns
TRHLH2
RD#/PSEN# high to ALE High
(Data)
215
169
115
ns
TWHLH
WR# High to ALE High
215
169
115
ns
TAVDV1 Address (P0) Valid to Valid Data In
250
175
105
ns(2)(3)
TAVDV2 Address (P2) Valid to Valid Data In
306
223
140
ns(2)(3)
TAVDV3
Address (P0) Valid to Valid
Instruction In
150
109
68
ns(3)
TAXDX
Data Hold after Address Hold
0
ns
TAVRL
(1)
Address Valid to RD# Low
100
70
40
ns(2)
TAVWL1 Address (P0) Valid to WR# Low
100
70
40
ns(2)
TAVWL2 Address (P2) Valid to WR# Low
158
115
74
ns(2)
TWHQX Data Hold after WR# High
90
69
32
ns
TQVWH Data Valid to WR# High
133
102
72
ns(3)
TWHAX
WR# High to Address Hold
167
125
84
ns
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