73S1121F
EMV Smart-Card Terminal Controller
with Built-in Dual ISO-7816 Interface and USB
DATA SHEET
AC CHARACTERISTICS: 8052 EXTERNAL MEMORY INTERFACE TIMING
SYMBOL
PARAMETER
MIN
Typ.
MAX
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
FOSC
TOSC
Processor Clock Frequency
Processor Clock Period
ALE Pulse Width
0
12.00
83.33
24
TLHLL
TAVLL
TLLAX
TLLPL
TPLPH
TPLIV
TAVIV
TPXIX
TPXIZ
TPLAZ
TRLRH
TWLWH
TRLDV
TRHDX
TRHDZ
TLLDV
TLLWL
TQVWX
TWHQZ
TRLAZ
2TOSC - 10
TOSC
TOSC - 10
TOSC - 10
3TOSC - 20
Address Valid to ALE Low
Address Valid to ALE Low
ALE Low to PSEN Low
PSEN Pulse Width Low
PSEN Low to Valid Inst In
Address to Valid Inst In
Input Instr Hold-PSEN High
PSEN Instr Float-PSEN High
PSEN Low to Address HighZ
RD Pulse Width
3TOSC - 50
6TOSC - 50
0
20
10
6TOSC - 20
6TOSC - 20
WR Pulse Width
RD Low to Valid Data In
Data Hold After RD
5TOSC - 50
0
Data Float After RD
20 *
8TOSC - 50
3TOSC + 20
ALE Low to Valid Data In
ALE low to RD or WR Low
Data Valid to WR Low
Data Hold After WR High
RD Low to Address Float
3TOSC - 20
TOSC
TOSC - 10
10
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© 2005 TERIDIAN Semiconductor Corporation
Rev 2.3
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
