ADUC7028 Analog Devices, ADUC7028 Datasheet - Page 15

• Manufacturer Part Number: ADUC7028
• Manufacturer: Analog Devices

Specifications of ADUC7028

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Flash (kbytes): 62Bytes
• Sram (bytes): 8192Bytes
• Gpio Pins: 40
• Adc # Channels: 8

Table 9. SPI Slave Mode Timing (Phase Mode = 0)
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
1
2
CS
SL
SH
DAV
DSU
DHD
DF
DR
SR
SF
DOCS
SFS
t
t
UCLK
HCLK
= 23.9 ns. It corresponds to the 41.78 MHz internal clock from the PLL before the clock divider; see Figure 57.
depends on the clock divider or CD bits in the PLLCON MMR. t
(POLARITY = 0)
(POLARITY = 1)
Description
CS to SCLOCK edge
SCLOCK low pulse width
SCLOCK high pulse width
Data output valid after 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
Data output valid after CS edge
CS high after SCLOCK edge
SCLOCK
SCLOCK
MISO
MOSI
CS
t
DOCS
t
CS
1
t
DSU
MSB IN
2
2
t
MSB
DHD
t
SH
Figure 9. SPI Slave Mode Timing (Phase Mode = 0)
t
DF
t
DAV
HCLK
1
= t
t
SL
Rev. D | Page 15 of 96
1
UCLK
t
DR
BITS 6 TO 1
BITS 6 TO 1
/2
CD
; see Figure 57.
2 × t
Min
(2 × t
1 × t
0
ADuC7019/20/21/22/24/25/26/27/28/29
UCLK
UCLK
HCLK
) + (2 × t
LSB IN
UCLK
t
SR
)
LSB
Typ
(SPIDIV + 1) × t
(SPIDIV + 1) × t
5
5
5
5
t
SF
t
SFS
HCLK
HCLK
Max
25
12.5
12.5
12.5
12.5
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns