BL600-Sx Hardware Integration Guide
Single Mode BLE Module
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16
CONN-HIG-BL600
Parameter
Min
Typ
Max
Unit
ADC input pin (AIN) voltage maximum
without saturating ADC (with 1.2V internal
reference)
1
1/1 prescaling
2/3 prescaling
1/3 prescaling
1.2
1.8
3.6
V
V
V
Time required to convert single sample in
10bit mode
9bit mode
2
8bit mode
2
68
36
20
uS
uS
uS
ADC input impedance (during operation)
3
1/1 prescaling:
2/3 prescaling:
1/3 prescaling:
275
350
550
kOhm
kOhm
kOhm
Note 1: Stay within internal 1.2 V reference voltage with given prescaling on AIN pin and do not violate
ADC maximum input voltage (for damage) for a given VCC, e.g. If VCC is 1.8 V can only expose
AIN pin to 2.1 V (VCC+0.3).
Note 2: Currently, the
smart
BASIC runtime engine firmware only allows 10-bit mode.
Note 3: ADC input impedance is estimated mean impedance of the ADC (AIN) pins. The tolerance is
+/-20%. The ADC is highly sensitive to the impedance of the source. The ADC (AIN) input
impedance is 200k-600k depending on your ADC gain (prescaling) setting. Normally, when not
sampling, the ADC (AIN) impedance will have very high value and can consider it to be an open
circuit. The moment ADC is sampling, ADC(AIN) impedance is 200k-600k.
3.3.3
nAutoRUN pin and Operating Modes
Operating modes (refer to the
smart
BASIC manual for details):
Self-contained mode
Interactive / Development mode
Table 7: nAutoRUN pin
Signal Name
Pin No I/O Comments
nAutoRUN (SIO_28)
28
I
Input with active low logic.
Operating mode selected by nAutoRun pin status:
If Low (0V), runs $autorun$ if it exists;
If High (VCC), runs via at+run (and “file name” of application).
Pin 40 (nAutoRUN) is an input, with active low logic. In the development board (DVK-BL600-sx) it is connected
so that the state is driven by the host’s DTR output line. nAutoRUN pin needs to be externally held high or low
to select between the two BL600 operating modes:
Self-contained Run mode (nAutoRUN pin held at 0V).
Interactive / Development mode (nAutoRUN pin held at VCC).
smart
BASIC runtime engine firmware checks for the status of nAutoRUN during power-up or reset. If it is low
and if there is a
smart
BASIC application named $autorun$ then the
smart
BASIC runtime engine executes the
application automatically; hence the name
self-contained run mode
.
