XE8801AMI027LF Semtech, XE8801AMI027LF Datasheet - Page 83

• Manufacturer Part Number: XE8801AMI027LF
• Description: IC DAS 16BIT FLASH 8K MTP 44LQFP
• Manufacturer: Semtech

Specifications of XE8801AMI027LF

• Applications: Sensing Machine
• Core Processor: RISC
• Program Memory Type: FLASH (22 kB)
• Controller Series: XE8000
• Ram Size: 512 x 8
• Interface: UART, USRT
• Number Of I /o: 24
• Voltage - Supply: 2.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• For Use With: XE8000MP - PROG BOARD AND PROSTART2 CARD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.5 Conditional edge detection 1
Condition 1 is satisfied when S0=1 at the falling edge of S1. The bit UsrtCond1 in RegUsrtCond1 is set when the
condition 1 is detected and the USRT interface is enabled (UsrtEnable=1). Condition 1 is asserted for both modes
(receiver and transmitter). The UsrtCond1 bit is read only and is cleared by all reset conditions and by writing any
data to its address.
Condition 1 occurrence also generates an interrupt on Irq_cond1.
15.6 Conditional edge detection 2
Condition 2 is satisfied when S0=1 at the rising edge of S1. The bit UsrtCond2 in RegUsrtCond2 is set when the
condition 2 is detected and the USRT interface is enabled. Condition 2 is asserted for both modes (receiver and
transmitter). The UsrtCond2 bit is read only and is cleared by all reset conditions and by writing any data to its
address.
Condition 2 occurrence also generates an interrupt on Irq_cond2.
15.7 Interrupts or polling
In receive mode, there are two possibilities to detect condition 1 or 2: the detection of the condition can generate
an interrupt or the registers can be polled (reading and checking the RegUsrtCond1 and RegUsrtCond2 registers
for the status of USRT communication).
© Semtech 2005
S1
S0
S1
S0
Figure 15-1: Condition 1
Figure 15-2: Condition 2
15-4
XE8801A – SX8801R
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