uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
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1.1 Features<br />
• ROM and RAM capacities<br />
CHAPTER 1 GENERAL<br />
Item Program Memory Data Memory<br />
(ROM) Internal High-Speed LCD Display RAM<br />
Part Number RAM<br />
µPD789870 ROM 4 KB 512 bytes 96 bytes<br />
µPD789871 8 KB<br />
µPD78F9872 Flash memory 16 KB<br />
• Minimum instruction execution time can be changed from high-speed (0.4 µs: @ 5.0 MHz operation with main<br />
system clock) to ultra-low-speed (122 µs: @ 32.768 kHz operation with subsystem clock)<br />
• I/O ports: 33<br />
• Timer: 5 channels<br />
• 8-bit remote control timer: 1 channel<br />
• 8-bit timer: 2 channels<br />
• Watch timer: 1 channel<br />
• Watchdog timer: 1 channel<br />
• Serial interface: 1 channel<br />
• VFD controller/driver: Display output total 25<br />
• Vectored interrupt sources: 12<br />
• Power supply voltage: VDD = 2.7 to 5.5 V (in normal operation)<br />
VDD = 4.5 to 5.5 V (in VFD operation)<br />
• Operating ambient temperature: TA = –40 to +85°C<br />
1.2 Applications<br />
Products with a front panel such as DVD, VCD, and S-VCD.<br />
1.3 Ordering Information<br />
Part Number Package Internal ROM<br />
µPD789870GB-×××-8ET 52-pin plastic LQFP (10 × 10) Mask ROM<br />
µPD789871GB-×××-8ET 52-pin plastic LQFP (10 × 10) Mask ROM<br />
µPD78F9872GB-8ET 52-pin plastic LQFP (10 × 10) Flash memory<br />
Remark ××× indicates ROM code suffix.<br />
18 Preliminary User’s Manual U14938EJ1V0UM
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