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A/D Converter
14-11
S/H
bp9 bp8
bp7
bp6 bp5 bp4
bp3 bp2 bp1
bp0
S/H
bp9 bp8
bp7
bp6 bp5 bp4
bp3 bp2 bp1
bp0
S/H
16 (= 12 +4) cycles
ADEN flag
Conversion
reference clock
Status
One-time
conversion
Continuous
conversion
Sampling cycle
• Interrupt request
• Write to data buffer
Transfer
Transfer
■
Conversion reference clock selection, sampling cycle number selection
The A/D conversion time is [(12 + number of sampling cycles) x IOCLK/clock selection]/channel.
For example, if the conversion reference clock is set as 1/8 of IOCLK and the number of sampling cycles is set as
two cycles, the A/D conversion time is IOCLK x 112 cycles/channel.
Fig. 14-5-5 Conversion Timing When Using Two Sampling Cycles
Fig. 14-5-6 Conversion Timing When Using Four Sampling Cycles
Set the conversion reference clock so that one cycle is at least 200 ns.
Set the number of sampling cycles so that one sampling cycle is at least 400 ns (when the output impedance
of the external device that drives the AN pin is 1 k
Ω
or less).
If the output impedance of the external device that drives the AN pin is greater than 1 k
Ω
, it is necessary to
lengthen the sampling cycle.
When A/D conversion (ADEN = "1") is started up from the stopped state (ADEN = "0"), a wait state of a
maximum of one conversion reference clock cycle is inserted between the point when ADEN goes to "1" and the
actual start of conversion.
S/H
bp9
bp8 bp7
bp6 bp5 bp4
bp3 bp2 bp1
bp0
S/H
bp9
bp8 bp7
bp6 bp5 bp4
bp3 bp2 bp1
bp0
S/H
bp9
bp8
14 (= 12 +2) cycles
ADEN flag
Conversion
reference clock
Status
One-time
conversion
Continuous
conversion
Sampling cycle
• Interrupt request
• Write to data buffer
Transfer
Transfer
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...