diff options
Diffstat (limited to 'firmware/notes')
| -rw-r--r-- | firmware/notes | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/firmware/notes b/firmware/notes index 3795e63..1296a35 100644 --- a/firmware/notes +++ b/firmware/notes @@ -1,9 +1,13 @@ V_GS,LOW = V_DD - (V_DD - V_CC - V_TVS) * (R2 / (R1 + R2)) V_GS,HIGH = V_DD - V_DD * (R2 / (R1 + R2)) -V_DD = 0.6 * (1 + R1 / R2) = 0.6 * (1 + 100 / 5.1) = 12.4 -V_GS,LOW = 12.4 - (12.4 - 5 - 0.7) * (100 / (100 + 10)) = 0.6 V +V_TVS ~= 6.3 V + +V_DD = 0.6 * (1 + R1 / R2) = 0.6 * (1 + 100 / 5.1) = 12.4 V +V_GS,LOW = 12.4 - ((12.4 - V_TVS) * (100 / (100 + 10)) + V_TVS) = 0.55 V V_GS,HIGH = 12.4 - 12.4 * (100 / (100 + 10)) = 1.13 V +V_GS,TH = 0.6-0.7 + Default stdio driver flushes after newline. May sleep for 50ms when the tx fifo is full, but generally unbuffered. |