UPD75216ACW

Manufacturer Part NumberUPD75216ACW
Description4-BIT SINGLE-CHIP MICROCOMPUTER
ManufacturerNEC
UPD75216ACW datasheet
 


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Page 26/72:

FIP Controller/Driver Block Diagram

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Fig. 5-8 FIP Controller/Driver Block Diagram
Display Data Memory
(64
4 Bits)
Key Scan Registers (KS0, KS1)
12
Segment Data Latch (16)
10
High-Voltage Output Buffer
10
S0-S9
Note
The FIP controller/driver can only operate in the high and intermediate-speeds (PCC = 0011B or
0010B) of the main system clock (SCC.0 = 0). It may cause errors with any other clock or in the
standby mode. Thus, be sure to stop FIP controller operation (DSPM.3 = 0) and then shift the unit
to any other clock mode or the standby mode.
26
Internal Bus
4
4
Display
Digit
Mode
Select
Register
Register
Port H
4
Digit Signal
Generator
4
4
Selector
2
2
4
4
Selector
10
2
4
10
2
4
T15/S10,
T13/S12/PH0-
T0-T9
T14/S11
T10/S15/PH3
PD75216A
Key Scan
4
Flag (KSF)
Dimmer
Select
Register
INTKS
IRQKS
Generation
Signal
V
V
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