C541U Datasheet, PDF (55/63 Pages) Siemens Semiconductor Group – 8 BIT CMOS MICROCONTROLLER

C541U
AC Characteristics of Programming Mode
V_DD = 5 V ± 10 %; V_PP = 11.5 V ± 5 %; T_A = 25 °C ± 10 °C
Parameter
Symbol
ALE pulse width
t_PAW
PMSEL setup to ALE rising edge
t_PMS
Address setup to ALE, PROG, or PRD falling t_PAS
edge
Address hold after ALE, PROG, or PRD
t_PAH
falling edge
Address, data setup to PROG or PRD
Address, data hold after PROG or PRD
PMSEL setup to PROG or PRD
PMSEL hold after PROG or PRD
PROG pulse width
PRD pulse width
Address to valid data out
PRD to valid data out
Data hold after PRD
Data float after PRD
PROG high between two consecutive PROG
low pulses
t_PCS
t_PCH
t_PMS
t_PMH
t_PWW
t_PRW
t_PAD
t_PRD
t_PDH
t_PDF
t_PWH1
PRD high between two consecutive PRD low t_PWH2
pulses
XTAL clock period
t_CLKP
min.
35
10
10
10
100
0
10
10
100
100
–
–
0
–
1
100
83.3
Limit Values
max.
–
–
–
–
–
–
–
–
–
–
75
20
–
20
–
500
Unit
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
µs
ns
ns
Semiconductor Group
53