diff --git a/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.asc b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.asc new file mode 100644 index 0000000..f358541 --- /dev/null +++ b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.asc @@ -0,0 +1,36 @@ +Version 4 +SHEET 1 1388 680 +WIRE 192 0 -48 0 +WIRE 192 64 192 0 +WIRE -48 176 -48 0 +WIRE 192 208 192 144 +WIRE 288 208 192 208 +WIRE 400 208 368 208 +WIRE 192 288 192 208 +WIRE -48 368 -48 256 +WIRE 192 368 192 352 +WIRE 192 368 -48 368 +WIRE 192 400 192 368 +FLAG 192 400 0 +FLAG 400 208 #RESET +IOPIN 400 208 In +SYMBOL res 176 48 R0 +SYMATTR InstName R1 +SYMATTR Value 100 +SYMBOL cap 176 288 R0 +SYMATTR InstName C1 +SYMATTR Value 10µ +SYMBOL res 384 192 R90 +WINDOW 0 0 56 VBottom 2 +WINDOW 3 32 56 VTop 2 +SYMATTR InstName R2 +SYMATTR Value 1k +SYMBOL voltage -48 160 R0 +WINDOW 123 0 0 Left 0 +WINDOW 39 0 0 Left 0 +SYMATTR InstName V1 +SYMATTR Value 5 +TEXT -1112 224 Left 2 ;Constraints:\nVoltage source that MCP2515 accepts is 5 V.\nThe minimum operating voltage is 2.7 V.\nTo ensure this happens with a comfortable margin, we will design #RESET\nto remain below 2.7 V for at least 10 microseconds. +TEXT -1112 -40 Left 2 ;Problem:\n(Taken from MCP2515 Datasheet [Page 57])\nIt is important to provide a RESET signal after power-up to ensure that the logic\nand registers are in their default state. A hardware Reset can be achieved\nautomatically by placing an RC on the #RESET pin (See Figure 9-1).\nThe values must be such that the device is held in Reset for a minimum of\n2 microseconds after V_DD reaches the operating voltage, as indicated\nin the electrical specification (t_RL). +TEXT -1112 424 Left 2 !.tran 0 0.001 0 startup +TEXT 424 0 Left 2 ;Result:\nThis way over-satisfies the requirements, but will stay with this since the parts are\nprobably cheapest, just lying around somewhere in these values. diff --git a/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.log b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.log new file mode 100644 index 0000000..f29932b --- /dev/null +++ b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.log @@ -0,0 +1,21 @@ +Circuit: * C:\SunseekerTelemetry\Simulations\MCP2515 - CANbus RESET Pin Configuration\LTSpice Schematic - MCP2515 RESET Pin.asc + +.OP point found by inspection. + +Date: Tue Feb 02 00:12:38 2021 +Total elapsed time: 0.025 seconds. + +tnom = 27 +temp = 27 +method = modified trap +totiter = 2090 +traniter = 2090 +tranpoints = 1046 +accept = 1046 +rejected = 0 +matrix size = 4 +fillins = 0 +solver = Normal +Matrix Compiler1: 100 bytes object code size 0.1/0.0/[0.0] +Matrix Compiler2: 248 bytes object code size 0.1/0.0/[0.0] + diff --git a/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.op.raw b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.op.raw new file mode 100644 index 0000000..8fbe173 Binary files /dev/null and b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.op.raw differ diff --git a/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.raw b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.raw new file mode 100644 index 0000000..23f67f8 Binary files /dev/null and b/Simulations/MCP2515 - CANbus RESET Pin Configuration/LTSpice Schematic - MCP2515 RESET Pin.raw differ