ADUC7021 Analog Devices, ADUC7021 Datasheet - Page 13

• Manufacturer Part Number: ADUC7021
• Manufacturer: Analog Devices

Specifications of ADUC7021

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 13
• Adc # Channels: 8

Table 7. SPI Master Mode Timing (Phase Mode = 0)
Parameter
t
t
t
t
t
t
t
t
t
t
1
2
SL
SH
DAV
DOSU
DSU
DHD
DF
DR
SR
SF
t
t
HCLK
UCLK
depends on the clock divider or CD bits in the PLLCON MMR. t
= 23.9 ns. It corresponds to the 41.78 MHz internal clock from the PLL before the clock divider; see Figure 57.
(POLARITY = 0)
(POLARITY = 1)
Description
SCLOCK low pulse width
SCLOCK high pulse width
Data output valid after SCLOCK edge
Data output setup before SCLOCK edge
Data input setup time before SCLOCK edge
Data input hold time after SCLOCK edge
Data output fall time
Data output rise time
SCLOCK rise time
SCLOCK fall time
SCLOCK
SCLOCK
MOSI
MISO
t
DOSU
t
DSU
MSB IN
1
1
MSB
t
DHD
t
SH
Figure 7. SPI Master Mode Timing (Phase Mode = 0)
t
DF
t
DAV
HCLK
2
t
= t
SL
Rev. D | Page 13 of 96
UCLK
2
t
DR
/2
BITS 6 TO 1
BITS 6 TO 1
CD
; see Figure 57.
Min
1 × t
2 × t
ADuC7019/20/21/22/24/25/26/27/28/29
UCLK
UCLK
LSB IN
t
SR
Typ
(SPIDIV + 1) × t
(SPIDIV + 1) × t
5
5
5
5
LSB
t
SF
HCLK
HCLK
Max
25
75
12.5
12.5
12.5
12.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns