Hardware Development Guide of Module Product
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4.2
Working Condition
Table 4-3 Working Condition
Signal
Description
Min
Typical
Max
Unit
VCC
Main power supply of
the of the module
3.4
3.6
4.2
V
VDD_P1
Voltage of PIN group P1
1.65
1.8
1.95
V
VDD_P2
Voltage of PIN group P2
2.85
3
3.15
V
Note: The typical voltage refers to the default I/O voltage of P1 and P2 PIN group. It is required that the external input PIN provides this
voltage. 2. The voltage design of external circuit interfaces should match that of the ZM8620 PINs.
4.3
Feature of Interface Power Level
4.3.1 Feature of Digital Power Level Signal
Table4-4 Power Level Range of Digital Signal
Signal
Description
Min
Max
Units
VIH
High level of input
voltage
0.65*VDD_PX
0.3
V
VIL
Low level of input
voltage
-0.3
0.35* VDD_PX
V
VOH
High level of output
voltage
VDD_PX-0.45
VDD_PX
V
VOL
Low level of output
voltage
0
0.45
V
Note: 1. the high/low PWL of input voltage should comply with the range in the table. 2. The high/low PWL of external interface signal
should match the interface PWL of ZM8620. 3. In VDD_PX, X=1 or 2, indicating the attribute of P1 group PIN or P2 group PIN.
4.4
Power Interface
4.4.1 Description of Power PINs
Power VCC (PIN No: 2, 24, 39, 41, 52). This is the positive signal of 3.6 power supply.
GND signal (PIN No: 4, 9, 15, 18, 21, 26, 27, 29, 34, 35, 37, 40, 43, 50). This is the power
ground and signal ground of ZM8620, which needs to be connected to the ground on the
system board. If the GND signal is not connected completely, the performance of ZM8620 will
be affected.
Содержание ZM8620
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