XR16M570
42
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO REV. 1.0.1
SEE”POWER-SAVE FEATURE” ON PAGE 21. To achieve minimum power drain, the voltage at any of the inputs of the
M570 should NOT be lower than its VCC supply.
AC ELECTRICAL CHARACTERISTICS
TA = -40
O
TO +85
O
C, VCC IS 1.62 TO 3.6V, 70 PF LOAD WHERE APPLICABLE
SYMBOL PARAMETER
LIMITS
1.8V ± 10%
M
IN MAX
LIMITS
2.5V ± 10%
M
IN MAX
LIMITS
3.3V ± 10%
M
IN MAX
UNIT
XTAL1 UART Crystal Frequency 24 24 24 MHz
ECLK External Clock Frequency 30 50 64 MHz
T
ECLK
External Clock Time Period 15 9 7 ns
T
AS
Address Setup Time 0 0 0 ns
T
AH
Address Hold Time 0 0 0 ns
T
CS
Chip Select Width 90 60 35 ns
T
RD
IOR# Strobe Width 90 60 35 ns
T
DY
Read Cycle Delay 90 60 35 ns
T
RDV
Data Access Time 85 55 30 ns
T
DD
Data Disable Time 25 10 5 ns
T
WR
IOW# Strobe Width 90 60 35 ns
T
DY
Write Cycle Delay 90 60 35 ns
T
DS
Data Setup Time 30 15 10 ns
T
DH
Data Hold Time 3 3 3 ns
T
WDO
Delay From IOW# To Output 50 50 50 ns
T
MOD
Delay To Set Interrupt From MODEM
Input
50 50 50 ns
T
RSI
Delay To Reset Interrupt From IOR# 50 50 50 ns
T
SSI
Delay From Stop To Set Interrupt 1 1 1 Bclk
T
RRI
Delay From IOR# To Reset Interrupt 45 45 45 ns
T
SI
Delay From Start To Interrupt 45 45 45 ns
T
INT
Delay From Initial INT Reset To
Transmit Start
824824824Bclk
T
WRI
Delay From IOW# To Reset Interrupt 45 45 45 ns
T
SSR
Delay From Stop To Set RXRDY# 1 1 1 Bclk
T
RR
Delay From IOR# To Reset RXRDY# 45 45 45 ns
T
WT
Delay From IOW# To Set TXRDY# 45 45 45 ns
