MAXQ3108-FFN+ Maxim Integrated Products, MAXQ3108-FFN+ Datasheet - Page 24

• Manufacturer Part Number: MAXQ3108-FFN+
• Description: IC MCU DUAL-CORE 16BIT 28-TSSOP
• Manufacturer: Maxim Integrated Products
• Series: MAXQ™r

Specifications of MAXQ3108-FFN+

• Core Processor: RISC
• Core Size: 16-Bit
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 11K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-TSSOP
• Processor Series: MAXQ
• Core: RISC
• Data Bus Width: 16 bit
• Data Ram Size: 2 KB
• Interface Type: I2C, JTAG, SPI
• Maximum Clock Frequency: 10 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 2
• Operating Supply Voltage: 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Low-Power, Dual-Core Microcontroller
24
EIE1 (07h, 01h)
Initialization:
Read/Write Access:
EIE1.[3:0]: EX[11:8]
EIE1.[7:4]: Reserved
PD0 (08h, 01h)
Initialization:
Read/Write Access:
PD0.[7:0]:
PD1 (09h, 01h)
Initialization:
Read/Write Access:
PD1.[6:0]:
PD1.7: Reserved
EIES0 (0Ah, 01h)
Initialization:
Read/Write Access:
EIES0.[7:0]: IT[7:0]
______________________________________________________________________________________
External Interrupt Enable 1 Register
EIE1 is cleared to 00h on all forms of reset.
Unrestricted read/write.
Enable External Interrupt Bits 11:8. Setting any of these bits to 1 enables the corresponding
external interrupt. Clearing any of the bits to 0 disables the corresponding interrupt function.
Reserved. Reads return 0.
Port 0 Direction Register
This register is cleared to 00h on all forms of reset.
Unrestricted read/write.
Port 0 Direction Register Bits 7:0. PD0 is used to determine the direction of the Port 0 function. The
port pins are independently controlled by their direction bits. When a bit is set to 1, its corresponding
pin is used as an output; data in the PO register is driven on the pin. When a bit is cleared to 0, its
corresponding pin is used as an input, and allows an external signal to drive the pin. Note that each
port pin has a weak pullup circuit when functioning as an input and the p-channel pullup transistor is
controlled by its respective PO bits. If the PO bit is set to 1, the weak pullup is on; if the PO bit is
cleared to 0, the weak pullup is off and forces the port pin into three-state.
Port 1 Direction Register
This register is cleared to 00h on all forms of reset.
Unrestricted read/write.
Port 1 Direction Register Bits 6:0. PD1 is used to determine the direction of the port 1 function.
The port pins are independently controlled by their direction bit. When a bit is set to 1, its
corresponding pin is used as an output; data in the PO register is driven on the pin. When a bit is
cleared to 0, its corresponding pin is used as an input, and allows an external signal to drive the
pin. Note that each port pin has a weak pullup circuit when functioning as an input and the p-
channel pullup transistor is controlled by its respective PO bits. If the PO bit is set to 1, the weak
pullup is on; if the PO bit is cleared to 0, the weak pullup is off and forces the port pin into three-
state. Special note about P1.6: The RST input function remains enabled on P1.6 unless it is
explicitly disabled (RSTD = 1). This means that the ports control bits (PD, PO) can be used to
generate a reset (e.g., by driving the pin low).
Reserved. Reads return 0.
External Interrupt Edge Select 0 Register
EIES0 is cleared to 00h on all forms of reset.
Unrestricted read/write.
Edge Select for External Interrupt Bits 7:0
ITx = 0: External interrupt x is positive-edge triggered.
ITx = 1: External interrupt x is negative-edge triggered.
Special Function Register Bit Descriptions (continued)