MCP3204-BIP MICROCHIP [Microchip Technology], MCP3204-BIP Datasheet - Page 15

• Manufacturer Part Number: MCP3204-BIP
• Description: 2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 5-1:
FIGURE 5-2:
1999 Microchip Technology Inc.
CS
CLK
D
D
CS
CLK
D
D
IN
OUT
* After completing the data transfer, if further clocks are applied with CS low, the A/D Converter will output LSB
** t
* After completing the data transfer, if further clocks are applied with CS low, the A/D Converter will output zeros
** t
IN
OUT
first data, then followed with zeros indefinitely. See Figure 5-2 below.
indefinitely.
a high impedance node, leaving the CLK running to clock out the LSB-first data or zeros.
high impedance node, leaving the CLK running to clock out LSB first data or zeroes.
DATA
DATA
: during this time, the bias current and the comparator power down while the reference input becomes
: During this time, the bias circuit and the comparator power down while the reference input becomes a
Start
Start
SGL/
DIFF
Communication with the MCP3204 or MCP3208.
Communication with MCP3204 or MCP3208 in LSB First Format.
t
SUCS
HI-Z
D2
SGL/
DIFF
t
SUCS
HI-Z
D1
D2
D0
t
SAMPLE
D1
Null
Bit
D0
(MSB)
t
SAMPLE
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
Null
Bit
B11 B10
t
CONV
t
Preliminary
CYC
B9
Don’t Care
B8
t
CONV
B7
Don’t Care
t
CYC
B6
B5
B4
MCP3204/3208
B3
B2
Power Down
t
DATA
B1
t
CSH
t
DATA
**
B0 *
**
Start
DS21298B-page 15
t
CSH
HI-Z
t
SGL/
DIFF
CYC
*
D2
HI-Z