UPD75216ACW

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


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5.8
FIP CONTROLLER/DRIVER
The on-chip FIP controller/driver has the following functions:
Generates the segment and digit signals by automatically reading the display data memory executing DMA
operation.
Can select up to a total of 26 display devices in the range of 9 to 16 segments and 9 to 16 digits.
Can apply the remaining display output as static output.
Can adjust the brightness at 8 levels using the dimmer function.
Can apply key scan operations.
• Generates interrupt at the key scan timing (IRQKS)
• Can generate key scan data output from the segment output pin.
Owns the high-voltage output pin (40 V) which can directly drive the FIP.
• Segment special pins (S0 to S9)
• Digit output pins (T0 to T15)
Can incorporate pull-down resistors bit-wise as mask options.
Differences between PD75261A and PD75238 display output function are shown in Table 5-2.
Table 5-2 Differences between PD75216A and PD75238 display output function
High-voltage output display
FIP output total
Segment output : 9 to 16
Digit output
Display data area
1C0H to 1FFH
Output dual-function pin
S12 to S15
(PORTH)
Key scan register
KS0, KS1
: V
= 40 V, I
= 3 mA
OD
OD
: V
= 40 V, I
= 15 mA
OD
OD
PD75216A
: 26
FIP output total
Segment output : 9 to 24
: 9 to 16
Digit output
1A0H to 1FFH
S0 to S23
(PORT10 to PORT15)
KS0 to KS2
PD75216A
PD75238
: 34
: 9 to 16
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