Datasheet

LPC4370 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 2 — 21 October 2013 109 of 150
NXP Semiconductors
LPC4370
32-bit ARM Cortex-M4/M0 microcontroller
11.8 USART interface
Fig 25. I
2
S-bus timing (transmit)
Fig 26. I
2
S-bus timing (receive)
002aag497
I2Sx_TX_SCK
I2Sx_TX_SDA
I2Sx_TX_WS
T
cy(clk)
t
f
t
r
t
WH
t
WL
t
v(Q)
t
v(Q)
002aag498
T
cy(clk)
t
f
t
r
t
WH
t
su(D)
t
h(D)
t
su(D)
t
su(D)
t
WL
I2Sx_RX_SCK
I2Sx_RX_SDA
I2Sx_RX_WS
Table 21. Dynamic characteristics: USART interface
T
amb
=25  C; 2.2 V  V
DD(REG)(3V3)
 3.6 V; 2.7 V  V
DD(IO)
 3.6 V; C
L
= 20 pF. Simulated values.
Symbol Parameter Conditions Min Typ Max Unit
T
cy(clk)
clock cycle time on pins Ux_UCLK - 0.1 - s
output
t
v(Q)
data output valid time on pin Ux_TXD - 6.5 - ns