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UPD784915B Datasheet(PDF) 3 Page - NEC

Part No. UPD784915B
Description  16-BIT SINGLE-CHIP MICROCONTROLLERS
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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 3 page
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µPD784915B, 784916B
3
Function List (1/2)
Item
Internal ROM capacity
Internal RAM capacity
Operating clock
Minimum instruction
execution time
I/O ports
Real-time output port
Super
Timer/counter
timer
unit
Capture register
VCR special
circuit
General-purpose
timer
PWM output
Serial interface
A/D converter
µPD784915B
µPD784916B
49152 bytes
63488 bytes
1280 bytes
16 MHz (internal clock: 8 MHz)
Low frequency oscillation mode: 8 MHz (internal clock: 8 MHz)
Low power dissipation mode: 32.768 kHz (subsystem clock)
250 ns (with 8-MHz internal system clock)
54
input : 8
I/O
: 46
11 (including one each for pseudo VSYNC, head amplifier switch, and chrominance rotation)
Timer/counter
Compare register
Capture register
Remark
TM0 (16 bits)
3
-
TM1 (16 bits)
3
1
FRC (22 bits)
-
6
TM3 (16 bits)
2
1
UDC (5 bits)
1
-
EC (8 bits)
4
-
For HSW signal generation
EDV (8 bits)
1
-
For CFG signal division
Input signal
Number of bits
Measurable cycle
Operating edge
CFG
22
125 ns to 524 ms
↑↓
DFG
22
125 ns to 524 ms
HSW
16
1
µs to 65.5 ms
↑↓
VSYNC
22
125 ns to 524 ms
CTL
16
1
µs to 65.5 ms
↑↓
TREEL
22
125 ns to 524 ms
↑↓
SREEL
22
125 ns to 524 ms
↑↓
•VSYNC separation circuit, HSYNC separation circuit
• VISS detection, wide aspect detection circuits
• Field identification circuit
• Head amplifier switch/chroma rotation output circuit
Timer
Compare register
Capture register
TM2 (16 bits)
1
TM4 (16 bits)
1 (capture/compare)
1
TM5 (16 bits)
1
• 16-bit accuracy
: 3 channels (carrier frequency: 62.5 kHz)
• 8-bit accuracy
: 3 channels (carrier frequency: 62.5 kHz)
3-wire serial I/O: 2 channels
• BUSY/STRB control (1 channel only)
8-bit resolution
× 12 channels, conversion time: 10
µs




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