tsc251g1dxxx-l12ced ATMEL Corporation, tsc251g1dxxx-l12ced Datasheet - Page 46

• Manufacturer Part Number: tsc251g1dxxx-l12ced
• Description: 8/16-bit Microcontroller With Serial Communication Interfaces - 32kbytes Rom
• Manufacturer: ATMEL Corporation

46
AT/TSC8x251G2D
Table 39. Bus Cycles AC Timings; V
Notes:
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
RHDX
T
T
RLRH
RLDV
RHAX
RLAZ
AVRL
LLRL
AVWL1
AVWL2
RHDZ1
RHDZ2
RHLH1
RHLH2
AVDV1
AVDV2
AVDV3
WLWH
WHLH
WHQX
QVWH
WHAX
AXDX
LHAX
LHLL
AVLL
LLAX
OSC
(1)
(1)
(1)
(1)
(1)
(1)
(1)
1. Specification for PSEN# are identical to those for RD#.
2. If a wait state is added by extending ALE, add 2·T
3. If wait states are added by extending RD#/PSEN#/WR#, add 2N·T
Parameter
1/F
ALE Pulse Width
Address Valid to ALE Low
Address hold after ALE Low
RD#/PSEN# Pulse Width
WR# Pulse Width
ALE Low to RD#/PSEN# Low
ALE High to Address Hold
RD#/PSEN# Low to Valid Data
Data Hold After RD#/PSEN# High
Address Hold After RD#/PSEN#
High
RD#/PSEN# Low to Address Float
Instruction Float After RD#/PSEN#
High
Data Float After RD#/PSEN# High
RD#/PSEN# high to ALE High
(Instruction)
RD#/PSEN# high to ALE High
(Data)
WR# High to ALE High
Address (P0) Valid to Valid Data In
Address (P2) Valid to Valid Data In
Address (P0) Valid to Valid
Instruction In
Data Hold after Address Hold
Address Valid to RD# Low
Address (P0) Valid to WR# Low
Address (P2) Valid to WR# Low
Data Hold after WR# High
Data Valid to WR# High
WR# High to Address Hold
OSC
DD
= 4.5 to 5.5 V, T
Min
162
165
215
215
100
100
158
133
167
83
78
78
19
22
99
49
90
0
0
0
12 MHz
Max
146
215
250
306
150
45
0
Min
121
124
169
169
102
125
115
62
58
58
11
14
70
43
70
70
69
0
0
0
16 MHz
OSC.
A
= -40 to 85°C
Max
104
165
175
223
109
40
0
Min
115
115
41
38
37
78
81
40
31
40
40
74
32
72
84
3
6
0
0
0
24 MHz
OSC
4135F–8051–11/06
Max
(N = 1..3).
105
140
115
61
30
68
0
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(2)(3)
(2)(3)
(2)
(2)
(3)
(3)
(2)
(3)
(3)
(2)
(2)
(2)
(3)