Shanghai SIMCom Wireless Solutions Limited 8PSA301 ユーザーズマニュアル
Smart Machine Smart Decision
14
I
TRKL-A
Trickle-A Charging current
81
90
99
mA
I
TRKL-B
Trickle-B Charging current
405
450
495
mA
V
TRKL
Trickle-B threshold voltage range
Programmable, 15.62 mV steps
Programmable, 15.62 mV steps
2.5
2.796
2.984
V
V
WEAK
Weak battery threshold range
Programmable, 18.75 mV steps
Programmable, 18.75 mV steps
3.0
3.206
3.581
V
V
BAT_MAX
Maximum battery voltage
Programmable, 25 mV steps
Programmable, 25 mV steps
4
4.2
4.775
V
I
BAT_MAX
Fast charging current range
Programmable, 90mA steps
Programmable, 90mA steps
90
1440
mA
VBAT_SNS
VBAT_SNS is used for battery voltage sensing, the typical input range is 2.5V~4.5V.
UART/SPI/I2C
SIM8905A provides several sets of GPIOs which are available as BLSP (BAM-enabled low-speed peripheral)
interfaces that can be configured to support various interface combinations, as shown in the following table. The
operation voltage is 1.8V
interfaces that can be configured to support various interface combinations, as shown in the following table. The
operation voltage is 1.8V
Table 4:
UART/SPI/I2C functional assignments
Pin Name
Pin#
Expected or Default
Function
Alternative
Function 1
Alternative
Function 2
UART2_TXD
94
BLSP1_UART_TX
BLSP1_SPI_MOSI
UART2_RXD
93
BLSP1_UART_RX
BLSP1_SPI_MISO
SENSOR_I2C_SDA
92
BLSP1_I2C_SDA
BLSP1_SPI_CS_N
BLSP1_UART_CTS
SENSOR_I2C_SCL
91
BLSP1_I2C_SCL
BLSP1_SPI_CLK
BLSP1_UART_RTS
GPIO_8
119
GPIO
BLSP6_SPI_MOSI
GPIO_9
118
GPIO
BLSP6_SPI_MISO
GPIO_10
117
GPIO
BLSP6_SPI_CS_N
BLSP6_I2C_SDA
GPIO_11
116
GPIO
BLSP6_SPI_CLK
BLSP6_I2C_SCL
GPIO_16
123
GPIO
BLSP5_SPI_MOSI
GPIO_17
124
GPIO
BLSP5_SPI_MISO
TP_I2C_SDA
48
BLSP5_I2C_SDA
BLSP5_SPI_CS_N
TP_I2C_SCL
47
BLSP5_I2C_SCL
BLSP5_SPI_CLK
UART1_TXD
34
BLSP2_UART_TX
BLSP2_SPI_MOSI
UART1_RXD
35
BLSP2_UART_RX
BLSP2_SPI_MISO
UART1_CTS
36
BLSP2_UART_CTS
BLSP2_SPI_CS_N
BLSP2_I2C_SDA
UART1_RTS
37
BLSP2_UART_RTS
BLSP2_SPI_CLK
BLSP2_I2C_SCL
CAM_I2C_SDA
84
BLSP3_I2C_SDA
CAM_I2C_SCL
83
BLSP3_I2C_SCL
Note:
1.
1.
UART: can be used as a diagnostic port, up to 4 Mbps;
2.
I2C: supports master-only mode; up to 3.4 MHz, 2.2Kohm pull-up resistors are needed externally;