Rainbow Electronics MAXQ7670 - Manual (Page 7)

MAXQ7670
Microcontroller with 10-Bit ADC,
PGA, 64KB Flash, and CAN Interface
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ELECTRICAL CHARACTERISTICS (continued)
(V DVDDIO = +5.0V, V AVDD = +3.3V, V DVDD = +2.5V, V REFADC = +3.3V, system clock = 16MHz. T A = T MIN to T MAX , unless otherwise
noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Capacitance I/O pins three-state 15 pF
PD0._ = 0 880
Maximum Output Impedance
PD0._ = 1 450
Ω
SYSTEM CLOCK
System Clock Frequency f SYSCLK From any clock source 0 16.67 MHz
SPI INTERFACE TIMING
SPI Master Operating
Frequency
f MCLK 0.5 x f SYSCLK 8 MHz
SPI Slave Mode Operating
Frequency
f SCLK f SYSCLK /8 MHz
SCLK Output Pulse-Width
High/Low t
MCH
,
t MCL
t
SYSCLK
- 25
ns
SCLK Input Pulse-Width
High/Low
t SCH , t SCL t SYSCLK ns
MOSI Output Hold Time
After SCLK Sample Edge
t MOH
t SYSCLK
- 25
ns
MOSI Output Setup Time to
SCLK Sample Edge
t MOS
t SYSCLK
- 25
ns
MISO Input Setup Time to
SCLK Sample Edge
t MIS 30 ns
MISO Input Hold Time After
SCLK Sample Edge
t MIH 0 ns
SCLK Inactive to MOSI
Inactive
t MLH
t SYSCLK
- 25
ns
MOSI Input Setup Time to
SCLK Sample Edge
t SIS 30 ns
MOSI Input Hold Time After
SCLK Sample Edge
t SIH
t SYSCLK
+ 25
ns
MISO Output Valid After
SCLK Shift Edge Transition
t SOV
3 t SYSCLK
+ 25
ns
MISO Output Disabled After
SS Edge Rise
t SLH
2 t SYSCLK
+ 50
ns
SS Falling Edge to MISO Active t SOE
2 t SYSCLK
+ 2.5
ns