215
edits
Changes
[WIP] Update MCU info + reformat table + merge TP numbers from page history
== UC CTR ==
== UC CTR ==
The MCU seems to most closely resemble an NEC (Renesas) 78K0R/Kx3-L 64-pin FBGA: https://www.renesas.com/us/en/document/mah/78k0rkx3-l-users-manual-hardware-r01uh0106ej040078k0rkx3l?language=en&r=1051991
The pin layouts are similar, but not the same
The functional pin mapping is almost exactly the same, except the GPIO port assignment is almost completely different.
Most low port numbers appear to map to the correct physical pin locations as described in the above datasheet, however around P7 and above this mapping is definitely altered.
Orientation: Pin 1 marker in bottom left corner
Orientation: Pin 1 marker in bottom left corner
===Hardware pins===
===Pinout===
{| class="wikitable" style="font-family:Monospace;text-align:center;width:100%;table-layout:fixed;width:26%;"
{| class="wikitable" style="font-family:Monospace;text-align:center;width:100%;table-layout:fixed;width:26%;"
|-
|style="background: #eaecf0" | 8
| style="background: #d9ffb3" | + || style="background: #bbbbbb" | G || || || TP75 || style="background: #ffaaaa" | X || style="background: #ffaaaa" | X || style="background: #4d4d33" | ?
| style="background: #d9ffb3" | + || style="background: #bbbbbb" | G || || || TP75 || style="background: #ffaaaa" | X || style="background: #ffaaaa" | X || style="background: #4d4d33" | ?
|-
|-
|style="background: #eaecf0" | 7
| style="background: #73e600" | SCL || || style="background: #bbbbbb" | G || || /RESET || style="background: #4d4d33" | ? || style="background: #4d4d33" | ? || style="background: #d9ffb3" | +
| style="background: #73e600" | SCL || || style="background: #bbbbbb" | G || || /RESET || style="background: #4d4d33" | ? || style="background: #4d4d33" | ? || style="background: #d9ffb3" | +
|-
|-
|style="background: #eaecf0" | 6
| style="background: #73e600" | SDA || || style="background: #d9ffb3" | + || TP77 || TP76 || || || style="background: #d9ffb3" | +
| style="background: #73e600" | SDA || || style="background: #d9ffb3" | + || TP77 || TP76 || || || style="background: #d9ffb3" | +
|-
|-
|style="background: #eaecf0" | 5
| style="background: #4d4d33" | ? || || TP78 || PWRLED1 || || || || CHRGLED
| style="background: #4d4d33" | ? || || TP78 || PWRLED1 || || || || CHRGLED
|-
|-
|style="background: #eaecf0" | 4
| || || || || || || style="background: #bbbbbb" | G || style="background: #bbbbbb" | G
| || || || || || || style="background: #bbbbbb" | G || style="background: #bbbbbb" | G
|-
|-
|style="background: #eaecf0" | 3
| || PWRBTN || || || || || BATTTHM ||
| || PWRBTN || || || || || BATTTHM ||
|-
|-
|style="background: #eaecf0" | 2
| || || || PWRLED0 || || || HOMEBTN ||
| || || || PWRLED0 || || || HOMEBTN ||
|-
|-
|style="background: #eaecf0" | 1
| style="background: #d9ffb3" | + || || || || style="background: #8efab4" | SCL || style="background: #8efab4" | SDA || || style="background: #bbbbbb" | G
| style="background: #d9ffb3" | + || || || || style="background: #8efab4" | SCL || style="background: #8efab4" | SDA || || style="background: #bbbbbb" | G
|-
!/
!A
!B
!C
!D
!E
!F
!G
!H
|}
|}
===Software pins===
===Pin assignment===
und = undocumented / custom
SFR = Special Function Register (SFR bank 1, range FFF00h - FFFFFh)
ESR = Extended Special Function Register (SFR bank 2, range F0000h - F0806h)
/ = active low (ground to enable, pull to power supply to disable)
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Port ID
! TP
! Pin ID
! Pin
! Port
! Purpose
! Purpose
|-
|-
| 020
| TP79
| ??
| A8
| EVdd
| Digital voltage source input (positive)
|-
| TP74
| E7
| /RESET
| Resets the MCU when grounded, but is also used when reprogramming
|-
| TP75
| E8
| FLMD0
| Flash mode(?) used when reprogramming with external programmer
|-
| TP76
| E6
| TOOL1
| Used when using an ICE or debugger
|-
| TP77
| D6
| TOOL0
| Multipurpose pin for reprogramming and debugging
|-
|
| A7
| SCL0 / P6.0
| DSi-side I2C SCL
|-
|
| A6
| SDA0 / P6.1
| DSi-side I2C SDA
|-
|
| E1
| SCL1 / ESR[510h].und
| 3DS-side SCL
|-
|
| F1
| SDA1 / ESR[510h].und
| 3DS-side SDA
|-
|
| F7
| /P0.1
| SocReset_n (one of the two SoC reset signals)
|-
|
| G7
| /P0.0
| SocReset_n (one of the two SoC reset signals)
|-
|
|
| /P3.0
| Unknown. Probably resets something, as it's poked in a similar pattern to the SoC reset signals.
|-
|
|
| P5.0
| Toggles something (poked in conjunction with reset signals)
|-
|
|
| P2.0
| HOME button
| HOME button
|-
|-
| 043
|
| ??
|
| P4.3
| Charging LED(?)
| Charging LED(?)
|-
|-
| 051
|
| ??
|
| P5.1
| Charger "button"
| Charger "button"
|-
|-
| 073
|
| ??
|
| P7.0
| ???
|-
|
|
| P2.4
| BatteryChargeState (?)
|-
|
|
| P7.3
| Power button
| Power button
|-
|-
| 074
|
| ??
|
| P7.4
| WiFi button
| WiFi button
|-
|-
| 076
|
| ??
|
| P7.6
| External IRQ (MCU --> SoC)
| External IRQ (MCU --> SoC)
|}
|}