ADE7569ASTZF16 Analog Devices Inc, ADE7569ASTZF16 Datasheet - Page 118

• Manufacturer Part Number: ADE7569ASTZF16
• Description: IC ENERGY METER MCU 16K 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE7569ASTZF16

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (16 kB)
• Controller Series: ADE75xx
• Ram Size: 512 x 8
• Interface: I²C, SPI, UART
• Number Of I /o: 20
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 3.13V To 3.46V, 2.4V To 3.7V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
Mode 2 (8-Bit Timer/Counter with Autoreload)
Mode 2 configures the timer register as an 8-bit counter (TL0)
with automatic reload as shown in Figure 99. Overflow from TL0
not only sets TF0 but also reloads TL0 with the contents of TH0,
which is preset by software. The reload leaves TH0 unchanged.
Mode 3 (Two 8-Bit Timer/Counters)
Mode 3 has different effects on Timer 0 and Timer 1. Timer 1 in
Mode 3 simply holds its count. The effect is the same as setting
TR1 = 0. Timer 0 in Mode 3 establishes TL0 and TH0 as two
separate counters. This configuration is shown in Figure 100.
TL0 uses the Timer 0 control bits, C/ T , Gate0 (see
TR0 and TF0 (see
into a timer function (counting machine cycles) and takes over
the use of TR1 and TF1 from Timer 1. Therefore, TH0 controls the
Timer 1 interrupt. Mode 3 is provided for applications requiring
an extra 8-bit timer or counter.
When Timer 0 is in Mode 3, Timer 1 can be turned on and off
by switching it out of and into its own Mode 3, or it can be used
by the serial interface as a baud rate generator. In fact, Timer 1
can be used in any application not requiring an interrupt from
Timer 1 itself.
GATE
P0.6/T0
f
INT0
CORE
f
CORE
P0.6/T0
f
CORE
GATE
INT
TR1
/12
0
TR0
TR0
C/T = 1
C/T = 0
Figure 100. Timer/Counter 0, Mode 3
Figure 99. Timer/Counter 0, Mode 2
Table 114
C/T = 0
C/T = 1
CORE
CLK/12
CONTROL
), and the
CONTROL
RELOAD
(8 BITS)
(8 BITS)
(8 BITS)
TH0
TL0
(8 BITS)
TH0
TL0
INT0 pin. TH0 is locked
TF1
TF0
TF0
Table 113
INTERRUPT
INTERRUPT
INTERRUPT
Rev. B | Page 118 of 152
),
TIMER 2
Timer/Counter 2 Data Registers
Timer/Counter 2 also has two pairs of 8-bit data registers
associated with it: Timer 2 high byte SFR (TH2, Address 0xCD),
Timer 2 low byte SFR (TL2, Address 0xCC), Timer 2 reload/
capture high byte SFR (RCAP2H, Address 0xCB), and Timer 2
reload/capture low byte SFR (RCAP2L, Address 0xCA). These
are used both as timer data registers and as timer capture/reload
registers (see Table 120 to Table 123).
Timer/Counter 2 Operating Modes
The following sections describe the operating modes for
Timer/Counter 2. The operating modes are selected by bits in
the Timer/Counter 2 control SFR (T2CON, Address 0xC8), as
shown in Table 115 and Table 124.
Table 124. T2CON Operating Modes
RCLK (or) TCLK
0
0
1
X
16-Bit Autoreload Mode
The 16-bit autoreload mode has two options that are selected by
EXEN2 (Bit 3) in the Timer/Counter 2 control SFR (T2CON,
Address 0xC8). If EXEN2 = 0 when Timer 2 rolls over, it not
only sets TF2 but also causes the Timer 2 SFRs to be reloaded
with the 16-bit value in both the Timer 2 reload/capture high byte
SFR (RCAP2H, Address 0xCB) and Timer 2 reload/capture low
byte SFR (RCAP2L, Address 0xCA) registers, which are preset
by software. If EXEN2 = 1, Timer 2 performs the same events as
when EXEN2 = 0 but adds a 1-to-0 transition at the external
input, T2EX, which triggers the 16-bit reload and sets EXF2.
Autoreload mode is shown in Figure 101.
16-Bit Capture Mode
The 16-bit capture mode has two options that are selected by
EXEN2 (Bit 3) in the Timer/Counter 2 control SFR (T2CON,
Address 0xC8). If EXEN2 = 0, Timer 2 is a 16-bit timer or
counter that, upon overflowing, sets the Timer 2 overflow bit
(TF2, Bit 7). This bit can be used to generate an interrupt. If
EXEN2 = 1, then Timer 2 performs the same events as when
EXEN2 = 0, but it adds a l-to-0 transition on the T2E external
input, causing the current value in the Timer 2 SFRs, TL2
(Address 0xCC) and TH2 (Address 0xCD), to be captured into
the RCAP2L (Address 0xCA) and RCAP2H (Address 0xCB)
SFRs, respectively. In addition, the transition at T2EX causes the
EXF2 bit (Bit 6) in the T2CON SFR (Address 0xC8) to be set,
and EXF2, like TF2, can generate an interrupt. Capture mode is
shown in Figure 102. The baud rate generator mode is selected
by RCLK = 1 and/or TCLK = 1.
CAP2
0
1
X
X
TR2
1
1
1
0
Mode
16-bit autoreload
16-bit capture
Baud rate
Off