Changes in d787979: nxp

				Chip-dat/Maxim-dat/Maxim-dat.md
			
          @@ -19,6 +19,17 @@

           - MAX3387EEUG - 3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones

          +

          +

          +## RTC 

          +

          +MAX31328 == ±3.5ppm, I2C RTC with Integrated Crystal and Power Management

          +

          +The MAX31328 is a low-cost, extremely accurate, I2C real-time clock (RTC) with an integrated temperaturecompensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device and eliminates the external crystal requirement in the system. The MAX31328 is available in a 10-pin LGA package.

          +

          +

          +

          +

           ## ref 

           - [[chip-dat]]

          \ No newline at end of file

				Chip-dat/NXP-dat/NXP-dat.md
			
          @@ -27,6 +27,11 @@ PCF85176 == 40 x 4 universal LCD driver for low multiplex rates

           - [[PCF8574-dat]]

          +## processer 

          +

          +MK81FN256VDC15 - Kinetis K81-150 MHz HW Cryptographic Co-Processor, Anti-Tamper and QuadSPI Microcontrollers (MCUs) Based on Arm® Cortex®-M4 Core

          +

          +XFBGA121: XFBGA121, plastic, extremely thin fine-pitch ball grid array; 121 bumps; 0.65 mm pitch; 8 mm x 8 mm x 0.43 mm body

           ### PCF8566

				Tech-dat/RTC-dat/rtc-dat.md
			
          @@ -20,6 +20,7 @@ BL

           MCP7940N == Battery-Backed I2C™ Real-Time Clock/Calendar with SRAM

          +- [[Maxim-dat]]

           ## SCH 

          @@ -41,6 +42,10 @@ The above circuit generates a pulse for GLOBAL_EN when nRTC_INT goes low

           GLOBAL_EN needs to be pulse low for >1mS

          +

          +

          +

          +

           ## ref board 

           [[MPC1073-DAT]]

          \ No newline at end of file

				Tech-dat/interactive-dat/button-dat/2026-01-25-15-05-12.png
			
          Binary files /dev/null and b/Tech-dat/interactive-dat/button-dat/2026-01-25-15-05-12.png differ

				Tech-dat/interactive-dat/button-dat/button-dat.md
			
          @@ -2,6 +2,15 @@

           # button-dat 

          +## turtle button 

          +

          +- normally all manually tested 

          +

          +![](2026-01-25-15-05-12.png)

          +

          +

          +

          +

           ## Buttons Circuits

...	...	@@ -19,6 +19,17 @@
19	19	- MAX3387EEUG - 3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones
20	20
21	21
	22	+
	23	+
	24	+## RTC
	25	+
	26	+MAX31328 == ±3.5ppm, I2C RTC with Integrated Crystal and Power Management
	27	+
	28	+The MAX31328 is a low-cost, extremely accurate, I2C real-time clock (RTC) with an integrated temperaturecompensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device and eliminates the external crystal requirement in the system. The MAX31328 is available in a 10-pin LGA package.
	29	+
	30	+
	31	+
	32	+
22	33	## ref
23	34
24	35	- [[chip-dat]]
...	...	\ No newline at end of file

...	...	@@ -27,6 +27,11 @@ PCF85176 == 40 x 4 universal LCD driver for low multiplex rates
27	27	- [[PCF8574-dat]]
28	28
29	29
	30	+## processer
	31	+
	32	+MK81FN256VDC15 - Kinetis K81-150 MHz HW Cryptographic Co-Processor, Anti-Tamper and QuadSPI Microcontrollers (MCUs) Based on Arm® Cortex®-M4 Core
	33	+
	34	+XFBGA121: XFBGA121, plastic, extremely thin fine-pitch ball grid array; 121 bumps; 0.65 mm pitch; 8 mm x 8 mm x 0.43 mm body
30	35
31	36
32	37	### PCF8566

...	...	@@ -20,6 +20,7 @@ BL
20	20
21	21	MCP7940N == Battery-Backed I2C™ Real-Time Clock/Calendar with SRAM
22	22
	23	+- [[Maxim-dat]]
23	24
24	25	## SCH
25	26
...	...	@@ -41,6 +42,10 @@ The above circuit generates a pulse for GLOBAL_EN when nRTC_INT goes low
41	42
42	43	GLOBAL_EN needs to be pulse low for >1mS
43	44
	45	+
	46	+
	47	+
	48	+
44	49	## ref board
45	50
46	51	[[MPC1073-DAT]]
...	...	\ No newline at end of file

...	...	@@ -2,6 +2,15 @@
2	2	# button-dat
3	3
4	4
	5	+## turtle button
	6	+
	7	+- normally all manually tested
	8	+
	9	+![](2026-01-25-15-05-12.png)
	10	+
	11	+
	12	+
	13	+
5	14
6	15	## Buttons Circuits
7	16