UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 418

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

16.6 Bit Set/Clear Function
interface. An operation error occurs if the following registers are written directly. Do not write any values directly via
bit manipulation, read/modify/write, or direct writing of target values.
23 below to set or clear the lower 8 bits in these registers.
the 16-bit data after a write operation in Figure 16-24). Figure 16-23 shows how the values of set bits or clear bits
relate to set/clear/no change operations in the corresponding register.
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The CAN control registers include registers whose bits can be set or cleared via the CPU and via the CAN
All the 16 bits in the above registers can be read via the usual method. Use the procedure described in figure 16-
Setting or clearing of lower 8 bits in the above registers is performed in combination with the higher 8 bits (refer to
• CAN global control register (C0GMCTRL)
• CAN global automatic block transmission control register (C0GMABT)
• CAN module control register (C0CTRL)
• CAN module interrupt enable register (C0IE)
• CAN module interrupt status register (C0INTS)
• CAN module receive history list register (C0RGPT)
• CAN module transmit history list register (C0TGPT)
• CAN module time stamp register (C0TS)
• CAN message control register (C0MCTRLm)
Register’s current values
Remark m = 0 to 15
Register’s value after
write operations
Write values
Figure 16-23. Example of Bit Setting/Clearing Operations
0
0
0
0
0
0
CHAPTER 16 CAN CONTROLLER
User’s Manual U17554EJ4V0UD
0
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clear 1
set
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