Datasheet

ADuC7128/ADuC7129
Rev. 0 | Page 20 of 92
Pin
No. Mnemonic Type
1
Description
63 P4.2/AD10 I/O General-Purpose Input and Output Port 4.2/External Memory AD10.
64 P4.3/PWM
TRIP
/AD11 I/O General-Purpose Input and Output Port 4.3/PWM Safety Cutoff/External Memory AD11.
65 P4.4/AD12 I/O General-Purpose Input and Output Port 4.4/External Memory AD12.
66 P4.5/AD13 I/O General-Purpose Input and Output Port 4.5/External Memory AD13.
68 REFGND S Ground for V
REF
. Typically connected to DGND.
69 V
REF
I/O
2.5 V Internal Voltage Reference. Must be connected to a 0.47 μF capacitor when using the
internal reference.
70 DACGND S Ground for the DAC. Typically connected to AGND.
71, 72 AGND S Analog Ground.
75 DACV
DD
S
Power Supply for the DAC. This must be supplied with 2.5 V. It can be connected to the LDO
output.
76 ADC11 I Single-Ended or Differential Analog Input 11.
77 ADC0 I Single-Ended or Differential Analog Input 0.
78 ADC1 I Single-Ended or Differential Analog Input 1.
79 ADC2/CMP0 I Single-Ended or Differential Analog Input 2/Comparator Positive Input.
80 ADC3/CMP1 I Single-Ended or Differential Analog Input 3/Comparator Negative Input.
1
I = input, O = output, S = supply.