SLVSIB0 December 2025 UCD91320
PRODUCTION DATA
4 Pin Configuration and Functions
Figure 4-1 PZ Package 100-Pin LQFP Top View
Figure 4-2 ZAW Package 100-Pin nFBGA Top ViewPIN | TYPE | DESCRIPTION | |||
|---|---|---|---|---|---|
NAME | 100-QFP | 100-nFBGA | Pin ID | ||
MONITORING INPUTS (MONx) | |||||
MON1 | 99 | B2 | I/O | 1 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON2 | 98 | C2 | I/O | 2 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON3 | 94 | D1 | I/O | 3 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON4 | 93 | E2 | I/O | 4 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON5 | 95 | C1 | I/O | 5 | Analog or Digital Monitor (0V – 3.3V) |
MON6 | 86 | F2 | I/O | 6 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON7 | 82 | F3 | I/O | 7 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON8 | 53 | K8 | I/O | 8 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON9 | 54 | K7 | I/O | 9 | Analog Monitor (0V – 3.3V)(1) |
MON10 | 55 | H7 | I/O | 10 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON11 | 69 | K4 | I/O | 11 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON12 | 70 | K3 | I/O | 12 | Analog Monitor (0V – 3.3V)(1) |
MON13 | 73 | K2 | I/O | 13 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
MON14 | 74 | K1 | I/O | 14 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON15 | 75 | J1 | I/O | 15 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON16 | 77 | H2 | I/O | 16 | Analog Monitor (0V – 3.3V)(1) |
| MON17 | 51 | J10 | I/O | 17 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON18 | 52 | K10 | I/O | 18 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON19 | 71 | J4 | I/O | 19 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON20 | 72 | J3 | I/O | 20 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON21 | 84 | H1 | I/O | 21 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON22 | 85 | G1 | I/O | 22 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON23 | 96 | B1 | I/O | 23 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| MON24 | 97 | D2 | I/O | 24 | Analog or Digital Monitor (0V – 3.3V), or GPIO |
| Digital Monitoring (DMONx) | |||||
| DMON1 | 89 | E4 | I/O | 25 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON2 | 90 | F1 | I/O | 26 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON3 | 91 | E3 | I/O | 27 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON4 | 80 | G4 | I/O | 28 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON5 | 81 | F4 | I/O | 29 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON6 | 66 | H4 | I/O | 30 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON7 | 14 | D6 | I/O | 31 | Digital Monitor (0V – 3.3V), or GPIO |
| DMON8 | 78 | H3 | I/O | 32 | Digital Monitor (0V – 3.3V), or GPIO |
Rail Enables (ENx) | |||||
EN1(GPIO) | 22 | B7 | I/O | 33 | Rail enable signal, digital output, or GPIO |
EN2(GPIO) | 21 | C7 | I/O | 34 | Rail enable signal, digital output, or GPIO |
EN3(GPIO) | 24 | D8 | I/O | 35 | Rail enable signal, digital output, or GPIO |
EN4(GPIO) | 26 | B8 | I/O | 36 | Rail enable signal, digital output, or GPIO |
EN5(GPIO) | 20 | C6 | I/O | 37 | Rail enable signal, digital output, or GPIO |
EN6(GPIO) | 19 | A9 | I/O | 38 | Rail enable signal, digital output, or GPIO |
EN7(GPIO) | 18 | A8 | I/O | 39 | Rail enable signal, digital output, or GPIO |
EN8(GPIO) | 42 | F9 | I/O | 40 | Rail enable signal, digital output, or GPIO |
EN9(GPIO) | 47 | H10 | I/O | 41 | Rail enable signal, digital output, or GPIO |
EN10(GPIO) | 48 | J9 | I/O | 42 | Rail enable signal, digital output, or GPIO |
EN11(GPIO) | 37 | F6 | I/O | 43 | Rail enable signal, digital output, or GPIO |
EN12(GPIO) | 39 | F7 | I/O | 44 | Rail enable signal, digital output, or GPIO |
EN13(GPIO) | 5 | D4 | I/O | 45 | Rail enable signal, digital output, or GPIO |
EN14(GPIO) | 15 | A5 | I/O | 46 | Rail enable signal, digital output, or GPIO |
EN15(GPIO) | 43 | G7 | I/O | 47 | Rail enable signal, digital output, or GPIO |
EN16(GPIO) | 46 | G10 | I/O | 48 | Rail enable signal, digital output, or GPIO |
| EN17(GPIO) | 10 | C5 | I/O | 49 | Rail enable signal, digital output, or GPIO |
| EN18(GPIO) | 11 | B5 | I/O | 50 | Rail enable signal, digital output, or GPIO |
| EN19(GPIO) | 12 | D5 | I/O | 51 | Rail enable signal, digital output, or GPIO |
| EN20(GPIO) | 35 | E6 | I/O | 52 | Rail enable signal, digital output, or GPIO |
| EN21(GPIO) | 38 | C10 | I/O | 53 | Rail enable signal, digital output, or GPIO |
| EN22(GPIO) | 58 | H9 | I/O | 54 | Rail enable signal, digital output, or GPIO |
| EN23(GPIO) | 61 | J6 | I/O | 55 | Rail enable signal, digital output, or GPIO |
| EN24(GPIO) | 62 | J5 | I/O | 56 | Rail enable signal, digital output, or GPIO |
| EN25(GPIO) | 65 | H5 | I/O | 57 | Rail enable signal, digital output, or GPIO |
| EN26(GPIO) | 67 | G6 | I/O | 58 | Rail enable signal, digital output, or GPIO |
| EN27(GPIO) | 36 | B10 | I/O | 59 | Rail enable signal, digital output, or GPIO |
| EN28(GPIO) | 60 | K5 | I/O | 60 | Rail enable signal, digital output, or GPIO |
| EN29(GPIO) | 45 | G9 | I/O | 61 | Rail enable signal, digital output, or GPIO |
| EN30(GPIO) | 44 | F10 | I/O | 62 | Rail enable signal, digital output, or GPIO |
| EN31(GPIO) | 79 | G3 | I/O | 63 | Rail enable signal, digital output, or GPIO |
| EN32(GPIO) | 68 | G5 | I/O | 64 | Rail enable signal, digital output, or GPIO |
Closed-Loop Margin Pins (MARx) | |||||
MAR1(GPIO) | 23 | C8 | I/O | 65 | Closed-loop margin PWM output, or GPIO |
MAR2(GPIO) | 28 | C9 | I/O | 66 | Closed-loop margin PWM output, or GPIO |
MAR3(GPIO) | 25 | D9 | I/O | 67 | Closed-loop margin PWM output, or GPIO |
MAR4(GPIO) | 27 | D10 | I/O | 68 | Closed-loop margin PWM output, or GPIO |
MAR5(GPIO) | 33 | E7 | I/O | 69 | Closed-loop margin PWM output, or GPIO |
MAR6(GPIO) | 34 | E9 | I/O | 70 | Closed-loop margin PWM output, or GPIO |
MAR7(GPIO) | 40 | E10 | I/O | 71 | Closed-loop margin PWM output, or GPIO |
MAR8(GPIO) | 41 | F8 | I/O | 72 | Closed-loop margin PWM output, or GPIO |
| MAR9(GPIO) | 56 | J7 | I/O | 73 | Closed-loop margin PWM output, or GPIO |
| MAR10(GPIO) | 57 | H8 | I/O | 74 | Closed-loop margin PWM output, or GPIO |
| MAR11(GPIO) | 87 | F5 | I/O | 75 | Closed-loop margin PWM output, or GPIO |
| MAR12(GPIO) | 88 | E5 | I/O | 76 | Closed-loop margin PWM output, or GPIO |
| MAR13(GPIO) | 29 | E8 | I/O | 77 | Closed-loop margin PWM output, or GPIO |
| MAR14(GPIO) | 30 | B9 | I/O | 78 | Closed-loop margin PWM output, or GPIO |
| MAR15(GPIO) | 31 | D7 | I/O | 79 | Closed-loop margin PWM output, or GPIO |
| MAR16(GPIO) | 32 | A10 | I/O | 80 | Closed-loop margin PWM output, or GPIO |
General Purpose Inputs and Outputs (GPIOx) | |||||
| GPIO1 | 49 | G8 | I/O | 81 | Boolean-Logical Output, or GPIO |
| GPIO2 | 50 | J8 | I/O | 82 | Boolean-Logical Output, or GPIO |
PMBus COMM INTERFACE | |||||
PMBUS_CLK | 7 | A3 | I/O | N/A | PMBus clock (must have pullup to 3.3V) |
PMBUS_DATA | 3 | C3 | I/O | N/A | PMBus data (must have pullup to 3.3V) |
PMBUS_nALERT | 2 | C4 | O | N/A | PMBus alert, active-low, open-drain output (must have pullup to 3.3V) |
PMBUS_CNTRL | 1 | D3 | I | N/A | PMBus control (must have pullup to 3.3V) |
| PMBUS_ADDR0 | 83 | G2 | I | N/A | PMBUS Address Select |
| PMBUS_ADDR1 | 13 | B6 | I | N/A | PMBUS Address Select |
| PMBUS_ADDR2 | 59 | H6 | I | N/A | PMBUS Address Select |
INPUT POWER, GROUNDS, AND CLOCKING | |||||
LFXOUT | 17 | A7 | CLK | N/A | Low-frequency crystal out |
LFXIN | 16 | A6 | CLK | N/A | Low-frequency crystal in |
nRESET | 6 | B4 | I | N/A | Active-low device reset input. Recommend pulling up to VDD if not required by application. Hold low for at least 1.5μs to perform a boot reset, or 1s for a power-on-reset (POR) |
SYNC_OUT | 4 | B3 | O | N/A | Synchronization clock I/O (5kHz) for multiple chip cascading |
VREF+ | 92 | E1 | I | N/A | (Optional) positive node of external reference voltage |
VREF- | 76 | J2 | P | N/A | (Optional) negative node of external reference voltage(1) |
VDD | 8,64 | A4, K6 | P | N/A | Input 3V to 3.6V supply. Refer to the Layout Guidelines section |
VSS | 9,63 | A2, K9 | P | N/A | Device ground |
BPCAP | 100 | A1 | P | N/A | 0.47µF bypass capacitor. Refer to the Layout Guidelines section |
Utilize MON9 only as an analog monitoring pin.
Utilize MON12 only as an analog monitoring pin.
Utilize MON16 only as an analog monitoring pin.
When the VREF- pin is not utilized, connect it to ground.