Ameba-D User Manual
User Manual All information provided in this document is subject to legal disclaimers. © REALTEK 2019. All rights reserved.
46
Pad Type
Cell Name
Loading (pF)
Driving (mA)
Pull Resistance (ohm)
Pin Name
1.8V
3.3V
1.8V
3.3V
PA
PB
Normal
HCZSD2IOLFS
15
2/
4/
6/
8mA
4/
8/
12/
16mA
~50k
~50k
PA[7]
PA[8]
PA[9]
PA[10]
PA[11]
PA[22]
PA[23]
PA[24]
PA[27]
PA[28]
PB[8]
PB[9]
PB[10]
PB[11]
PB[12]
PB[13]
PB[14]
PB[15]
PB[16]
PB[17]
SDIO
HCZSD3IOLFS_1D1V_1D8V
15
2/
4/
6/
8/
10/
12mA
4/
8/
12/
16/
20/
24mA
~50k
~50k
PB[18]
PB[19]
PB[20]
PB[21]
PB[22]
PB[23]
PB[24]
PB[25]
Key-Scan
HCZ816LFS_4P7K50K_SHDOZ
15
4/8mA
8/16mA
~4.7k/50k
~4.7k/50k
PA[12]
PA[13]
PA[14]
PA[15]
PA[16]
PA[17]
PA[18]
PA[19]
PA[20]
PA[21]
PA[25]
PA[26]
Audio
15
2/
4/
6/
8mA
4/
8/
12/
16mA
PU~29k
PL~26k
PU~29k
PL~26k
PA[0]
PA[1]
PA[2]
PA[3]
PA[4]
PA[5]
PA[6]
PB[28]
PB[29]
PB[30]
PB[31]
Cap-Touch
HCZ48LS_DIO
< 2
2/4mA
4/8mA
~50k
~50k
PB[4]
PB[5]
PB[6]
PB[7]
I
2
C
HCZ816LFS_4P7K10K
15
4/8mA
8/16mA
~4.7k/10k
~4.7k/10k
PA[29]
PA[30]
PA[31]
PB[0] (I
2
C)
PB[26] (I
2
C)
PB[27] (I
2
C)
PB[1] (ADC)
PB[2] (ADC)
PB[3] (ADC)
RWDS
HCZ816LFS_10K50K
15
4/8mA
8/16mA
~10k/50k
~10k/50k
N/A
5V Tolerate
HCZ48V5S
15
2/4mA
4/8mA
~50k
~50k
VBAT
6.2.2
Pad Pull Resistor Control
The PAD_BIT_PULL_DOWN_RESISTOR_EN and PAD_BIT_PULL_UP_RESISTOR_EN bits in the PADCTRL register allow the selection of on-chip
pull-up or pull-down resistors for each pin.
The possible on-chip resistor configurations are pull-up enabled, pull-down enabled, or no pull-up/pull-down, as shown in Table 6-2. Pull-down
and pull-up resistor’s value is different between different pad types.
Table 6-2 I
2
C pad pull resistor control
Control Register
K1
K2
K3
K4
Pull State
PUPDC =
x
and PU = 0 and PD = 0
Off
Off
Off
Off
No pull
PUPDC = 0 and PU = 1
Off
Off
On
Off
10k pull-up
PUPDC = 1 and PU = 1
On
Off
Off
Off
4.7k pull-up
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2019-05-15 10:08:03
