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PIC18F87K90 Datasheet(PDF) 10 Page - Microchip Technology |
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PIC18F87K90 Datasheet(HTML) 10 Page - Microchip Technology |
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10 / 566 page  PIC18F87K90 FAMILY DS39957B-page 10 Preliminary 2010 Microchip Technology Inc. The PIC18F87K90 family is also largely pin-compatible with other PIC18 families, such as the PIC18F8720, PIC18F8722, PIC18F85J11, PIC18F8490, PIC18F85J90, PIC18F87J90 and PIC18F87J93 families of microcontrollers with LCD drivers. This allows a new dimension to the evolution of applications, allowing developers to select different price points within Microchip’s PIC18 portfolio, while maintaining a similar feature set. 1.2 LCD Driver The on-chip LCD driver includes many features that ease the integration of displays in low-power applications. These include an integrated internal resistor ladder, so bias voltages can be generated internally. This enables software-controlled contrast control and eliminates the need for external bias voltage resistors. 1.3 Other Special Features • Communications: The PIC18F87K90 family incorporates a range of serial communication peripherals including two Enhanced USART, that support LIN/J2602, and two Master SSP modules capable of both SPI and I2C™ (Master and Slave) modes of operation. • CCP Modules: PIC18F87K90 family devices incorporate up to seven or five Capture/ Compare/PWM (CCP) modules. Up to six different time bases can be used to perform several different operations at once. • ECCP Modules: The PIC18F87K90 family has three Enhanced CCP (ECCP) modules to maximize flexibility in control applications: - Up to eight different time bases for performing several different operations at once - Up to four PWM outputs for each module, for a total of 12 PWMs - Other beneficial features, such as polarity selection, programmable dead time, auto-shutdown and restart, and Half-Bridge and Full-Bridge Output modes • 12-Bit A/D Converter: The PIC18F87K90 family has differential ADC. It incorporates program- mable acquisition time, allowing for a channel to be selected and a conversion to be initiated with- out waiting for a sampling period, and thus, reducing code overhead. • Charge Time Measurement Unit (CTMU): The CTMU is a flexible analog module that provides accu- rate differential time measurement between pulse sources, as well as asynchronous pulse generation. Together with other on-chip analog modules, the CTMU can precisely measure time, measure capacitance or relative changes in capacitance, or generate output pulses that are independent of the system clock. • LP Watchdog Timer (WDT): This enhanced version incorporates a 22-bit prescaler, allowing an extended time-out range that is stable across operating voltage and temperature. See Section 31.0 “Electrical Characteristics” for time-out periods. • Real-Time Clock and Calendar Module (RTCC): The RTCC module is intended for applications requiring that accurate time be maintained for extended periods of time with minimum to no intervention from the CPU. The module is a 100-year clock and calendar with automatic leap year detection. The range of the clock is from 00:00:00 (midnight) on January 1, 2000 to 23:59:59 on December 31, 2099. 1.4 Details on Individual Family Members Devices in the PIC18F87K90 family are available in 64-pin and 80-pin packages. Block diagrams for the two groups are shown in Figure 1-1 and Figure 1-2. The devices are differentiated from each other in these ways: • Flash Program Memory – - PIC18FX5K90 (PIC18F65K90 and PIC18F85K90) – 32 Kbytes - PIC18FX6K90 (PIC18F66K90 and PIC18F86K90) – 64 Kbytes - PIC18FX7K90 (PIC18F67K90 and PIC18F87K90) – 128 Kbytes •Data RAM - All devices except PIC18FX5K90 – 4 Kbytes - PIC18FX5K90 – 2 Kbytes • I/O Ports - PIC18F6XK90 (64-pin devices) – Seven bidirectional ports - PIC18F8XK90 (80-pin devices) – Nine bidirectional ports • LCD Pixels: - PIC18F6XK90 – 132 pixels (33 SEGs x 4 COMs) - PIC18F8XK90 – 192 pixels (48 SEGs x 4 COMs) • CCP Module - All devices except PIC18FX5K90 have seven CCP modules, PIC18FX5K90 has only five CCP modules •Timers - All devices except 18FX5K90 have six 8-bit timers and five 16-bit timers, PIC18FX5K90 has only four 8-bit timers and four 16-bit timers. • A/D Channels - All PIC18F8XK90 devices have 24 A/D channels, all PIC18F6XK90 devices have 16 A/D channels All other features for devices in this family are identical. These are summarized in Table 1-1 and Table 1-2. The pinouts for all devices are listed in Table 1-3 and Table 1-4. |
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