參數(shù)資料
型號: UPD75216
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁數(shù): 25/72頁
文件大?。?/td> 530K
代理商: UPD75216
25
μ
PD75216A
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)
: V
OD
= 40 V, I
OD
= 3 mA
Digit output pins (T0 to T15)
: V
OD
= 40 V, I
OD
= 15 mA
Can incorporate pull-down resistors bit-wise as mask options.
Differences between
μ
PD75261A and
μ
PD75238 display output function are shown in Table 5-2.
Table 5-2 Differences between
μ
PD75216A and
μ
PD75238 display output function
FIP output total
: 34
Segment output
: 9 to 24
Digit output
: 9 to 16
1A0H to 1FFH
S0 to S23
(PORT10 to PORT15)
KS0 to KS2
μ
PD75216A
FIP output total
: 26
Segment output
: 9 to 16
Digit output
: 9 to 16
1C0H to 1FFH
S12 to S15
(PORTH)
KS0, KS1
High-voltage output display
Display data area
Output dual-function pin
Key scan register
μ
PD75238
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