c35 Cells: ADD22

ADD22 is a one-bit half adder with 2x drive strength.

Truth table

Symbol

Capacitance

A	B		CO	S
0	0		0	0
0	1		0	1
1	0		0	1
1	1		1	0

ADD22-Symbol

Pin		Cap [pF]
A		0.013
B		0.016

Area

Power

0.226 mil²
146 µm²

1.75 µW/MHz

AC Characteristics

Delay[ns] = f(SL, L), Output Slope [ns] = f(SL, L) with SL = Input Slope [ns] and L = Output Load [pF]

AC Characteristics: Tj = 25°C VDD=3.3V Typical Process

	Rise				Fall
Slope [ns]	0.05		2		0.05		2
Load [pF]	0.002	0.64	0.002	0.64	0.002	0.64	0.002	0.64

Delay A => CO	0.14	1.73	0.16	1.74	0.21	1.28	0.61	1.69
Delay A => S	0.15	1.73	0.14	1.73	0.27	1.30	0.30	1.33
Delay B => CO	0.15	1.73	0.09	1.68	0.23	1.30	0.65	1.75
Delay B => S	0.13	1.71	0.08	1.67	0.27	1.30	0.23	1.26

Slew A => CO	0.10	4.08	0.14	4.07	0.10	2.33	0.14	2.33
Slew A => S	0.10	4.06	0.13	4.12	0.08	2.34	0.08	2.33
Slew B => CO	0.10	4.07	0.14	4.08	0.11	2.34	0.15	2.33
Slew B => S	0.09	4.09	0.13	4.08	0.08	2.34	0.08	2.31

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