EM6517 ETC, EM6517 Datasheet - Page 51

• Manufacturer Part Number: EM6517
• Description: 4 BIT MICROCONTROLLER
• Manufacturer: ETC

19.1.4 SWB high impedance state
19.1.5 Debouncer Frequency Option
19.1.6 System Frequency
19.1.7 Additional mask options
Other functions and parameters may also be changed using the metal 1 mask (i.e SVLD levels). Please
contact EM Marin if you have a special request.
The customer should specify the required options at the time of ordering (for ROM
Version only). A copy of the pages 48 to 51 as well as the « Software ROM
characteristic file » generated by the assembler (*.STA) should be attached to the
order. Also the Customer package marking should be defined at that time.
Option
Name
MSWBZ_Clk SWB Clock high
Option
Name
MSWBZ_Dat SWB Data high
Option
Name
MDeb
Option
Name
MFreq
impedance state.
impedance state.
Debouncer freq.
System frequency
= Xtal frequency
FOR ENGINEERING ONLY
NO
NO
Ck[11]
32kHz
A
A
A
X
X
A
X
X
Yes
Yes
Ck[14]
128kHz
B
B
B
B
By default the SWB Clock output is driven to logic ‘0’
outside a transmission. The user may choose high
impedance state on Clock output instead of logic’0’.
By default the SWB Data output is driven to logic ‘0’
outside a transmission. The user may choose high
impedance state on Data output instead of logic’0’.
By default the debouncer frequency is Ck[11]. The
user may choose Ck[14] instead of Ck[11].
Ck[14 ]corresponds to maximum 0.25ms debouncer
time in case of a 32kHz oscillator.
By default the system frequency is defined as being
32kHz. Higher Frequencies are possible. A second
setting guarantees typical write times for the EPROM
at a system frequency of 128 kHz.
© EM Microelectronic-Marin SA, 09/99, Rev. A/277
EM6517
51