ADuC7019/20/21/22/24/25/26/27/28/29
Data Sheet
Pin No. Mnemonic
Description
46
47
48
49
50
51
52
P3.6/AD6/PWMTRIP/PLAI[14]
General-Purpose Input and Output Port 3.6/External Memory Interface/PWM Safety Cutoff/
Programmable Logic Array Input Element 14.
General-Purpose Input and Output Port 3.7/External Memory Interface/PWM Synchronization/
Programmable Logic Array Input Element 15.
General-Purpose Input and Output Port 2.7/PWM Phase 1 Low-Side Output/External Memory
Select 3.
General-Purpose Input and Output Port 2.1/External Memory Write Strobe/PWM Phase 0 High-
Side Output/Programmable Logic Array Output Element 6.
General-Purpose Input and Output Port 2.2/External Memory Read Strobe/PWM Phase 0 Low-
Side Output/Programmable Logic Array Output Element 7.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.7/UART, SPI/Programmable Logic
Array Output Element 0.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.6/UART, SPI/Programmable Logic
Array Input Element 6.
P3.7/AD7/PWMSYNC/PLAI[15]
P2.7/PWM1L/MS3
P2.1/WS/PWM0H/PLAO[6]
P2.2/RS/PWM0L/PLAO[7]
P1.7/SPM7/PLAO[0]
P1.6/SPM6/PLAI[6]
53
54
55
IOGND
IOVDD
P4.0/AD8/PLAO[8]
Ground for GPIO (see Table 78). Typically connected to DGND.
3.3 V Supply for GPIO (see Table 78) and Input of the On-Chip Voltage Regulator.
General-Purpose Input and Output Port 4.0/External Memory Interface/Programmable Logic
Array Output Element 8.
56
57
58
59
60
61
62
63
64
65
66
P4.1/AD9/PLAO[9]
General-Purpose Input and Output Port 4.1/External Memory Interface/Programmable Logic
Array Output Element 9.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.5/UART, SPI/Programmable Logic
Array Input Element 5/External Interrupt Request 3, Active High.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.4/UART, SPI/Programmable Logic
Array Input Element 4/External Interrupt Request 2, Active High.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.3/UART, I2C1/Programmable
Logic Array Input Element 3.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.2/UART, I2C1/Programmable
Logic Array Input Element 2.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.1/UART, I2C0/Programmable
Logic Array Input Element 1.
Serial Port Multiplexed. General-Purpose Input and Output Port 1.0/Timer1 Input/UART, I2C0/
Programmable Logic Array Input Element 0.
General-Purpose Input and Output Port 4.2/External Memory Interface/Programmable Logic
Array Output Element 10.
P1.5/SPM5/PLAI[5]/IRQ3
P1.4/SPM4/PLAI[4]/IRQ2
P1.3/SPM3/PLAI[3]
P1.2/SPM2/PLAI[2]
P1.1/SPM1/PLAI[1]
P1.0/T1/SPM0/PLAI[0]
P4.2/AD10/PLAO[10]
P4.3/AD11/PLAO[11]
P4.4/AD12/PLAO[12]
P4.5/AD13/PLAO[13]
General-Purpose Input and Output Port 4.3/External Memory Interface/Programmable Logic
Array Output Element 11.
General-Purpose Input and Output Port 4.4/External Memory Interface/Programmable Logic
Array Output Element 12.
General-Purpose Input and Output Port 4.5/External Memory Interface/Programmable Logic
Array Output Element 13.
67
68
REFGND
VREF
Ground for the Reference. Typically connected to AGND.
2.5 V Internal Voltage Reference. Must be connected to a 0.47 μF capacitor when using the
internal reference.
69
70
71, 72
73, 74
75
DACREF
DACGND
AGND
AVDD
DACVDD
ADC11
External Voltage Reference for the DACs. Range: DACGND to DACVDD.
Ground for the DAC. Typically connected to AGND.
Analog Ground. Ground reference point for the analog circuitry.
3.3 V Analog Power.
3.3 V Power Supply for the DACs. Must be connected to AVDD.
Single-Ended or Differential Analog Input 11.
76
77
ADC0
Single-Ended or Differential Analog Input 0.
78
ADC1
Single-Ended or Differential Analog Input 1.
79
80
ADC2/CMP0
ADC3/CMP1
Single-Ended or Differential Analog Input 2/Comparator Positive Input.
Single-Ended or Differential Analog Input 3/Comparator Negative Input.
Rev. F | Page 30 of 104
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