TC7109 TelCom, TC7109 Datasheet - Page 16

• Manufacturer Part Number: TC7109
• Description: 12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: TelCom

TC7109
TC7109A
easily accomplished through the three-state output of the
TC7109A.
To ensure requirements for setup and hold times, minimum
pulse widths, and the drive limitations on long busses are
3-106
A.
ANALOG
Direct interfacing to most microprocessor busses is
Figures 1, 17 and 18 are typical connection diagrams.
ANALOG
GND
GND
IN
IN
MODE
HBEN
TC7109A
MODE
HBEN
TC7109A
CONTROL
RUN/HOLD
CE/LOAD
CONVERTER
RUN/HOLD
BYTE SELECT FLAGS
CE/LOAD
POL, OR
B9–B12
SELECT
LBEN
POL, OR
B1–B8
B9–B12
LBEN
B1–B8
CONVERT
6
8
6
8
Figure 12. Direct Mode Chip and Byte Enable Combinations
Figure 13. Three-Stating Several TC7109A's to a Small Bus
CHIP SELECT 2
+5V
B.
ANALOG
ANALOG
GND OR
GND
GND
IN
IN
MODE
MODE
HBEN
HBEN
TC7109A
TC7109A
CHIP SELECT 1
RUN/HOLD
CONVERTER
RUN/HOLD
CE/LOAD
CE/LOAD
POL, OR
SELECT
POL, OR
met, it is necessary to carefully consider the system timing
in this type of interface. This type of interface is used when
the memory peripheral address density is low, providing
simple address decoding. Interrupt handling can be simpli-
fied by using an interface to reduce the component count.
B1–B12
B9–B12
LBEN
LBEN
B1–B8
ANALOG-TO-DIGITAL CONVERTERS
CONVERT
14
6
8
+5V
C.
ANALOG
ANALOG
GND
TELCOM SEMICONDUCTOR, INC.
GND
12-BIT P-COMPATIBLE
IN
IN
MODE
HBEN
MODE
HBEN
TC7109A
TC7109A
BYTE FLAGS
CHIP SELECT
CONVERTER
RUN/HOLD
RUN/HOLD
CE/LOAD
CE/LOAD
SELECT
POL, OR
POL, OR
B9–B12
LBEN
B9–B12
LBEN
B1–B8
B1–B8
CONVERT
6
8
6
8
+5V