Q67120-C1048 Просмотр технического описания (PDF) - Siemens AG

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Q67120-C1048

8-bit Single-chip Microcontroller

Siemens AG 

C504

AC Characteristics for C504-L24 / C504-2R24

VCC = 5 V + 10 %, – 15 %; VSS = 0 V

TA = 0 to 70 °C

for the SAB-C504

TA = – 40 to 85 °C

for the SAF-C504

(CL for port 0, ALE and PSEN outputs = 100 pF; CL for all other outputs = 80 pF)

Program Memory Characteristics

Parameter

ALE pulse width

Address setup to ALE

Address hold after ALE

ALE low to valid instr in

ALE to PSEN

PSEN pulse width

PSEN to valid instr in

Input instruction hold after PSEN

Input instruction float after PSEN

Address valid after PSEN

Address to valid instr in

Address float to PSEN

Symbol

Limit Values

24-MHz clock

Variable Clock

1/tCLCL = 3.5 MHz to

24 MHz

min. max. min.

max.

tLHLL

43

tAVLL

17

tLLAX

17

tLLIV

–

tLLPL

22

tPLPH

95

tPLIV

–

tPXIX

0

t *)

PXIZ

–

t *)

PXAV

37

tAVIV

–

tAZPL

0

–

2tCLCL – 40 –

–

tCLCL – 25 –

–

tCLCL – 25 –

80 –

4tCLCL – 87

–

tCLCL – 20 –

–

3tCLCL – 30 –

60 –

3tCLCL – 65

–

0

–

32 –

–

tCLCL – 5

148 –

–

0

tCLCL – 10

–

5tCLCL – 60

–

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

*) Interfacing the C504 to devices with float times up to 37 ns is permissible. This limited bus contention will not

cause any damage to port 0 drivers.

Semiconductor Group

41

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