ADUC7121 Analog Devices, ADUC7121 Datasheet - Page 11

• Manufacturer Part Number: ADUC7121
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU
• Manufacturer: Analog Devices

Specifications of ADUC7121

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 9

Table 4 SPI Master Mode Timing (Phase Mode = 1)
Parameter
t
t
t
t
t
t
t
t
t
1
SL
SH
DAV
DSU
DHD
DF
DR
SR
SF
t
UCLK
= 23.9 ns. It corresponds to the 41.78 MHz internal clock from the PLL before the clock divider.
(POLARITY = 0)
(POLARITY = 1)
Description
SPICLK low pulse width
SPICLK high pulse width
Data output valid after SPICLK edge
Data input setup time before SPICLK edge
Data input hold time after SPICLK edge
Data output fall time
Data output rise time
SPICLK rise time
SPICLK fall time
SPICLK
SPICLK
MOSI
MISO
t
DAV
t
SH
Figure 3. SPI Master Mode Timing (Phase Mode = 1)
t
DSU
MSB IN
t
DHD
MSB
t
SL
1
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t
DF
BIT 6 TO BIT 1
t
DR
BIT 6 TO BIT 1
Min
1 × t
2 × t
UCLK
UCLK
t
SR
Typ
(SPIDIV + 1) × t
(SPIDIV + 1) × t
5
5
5
5
t
LSB IN
SF
LSB
UCLK
UCLK
12.5
Max
25
12.5
12.5
12.5
ADuC7121
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns