Datasheet

Section 18 A/D Converter
R01UH0309EJ0500 Rev. 5.00 Page 1061 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Module data bus
Control circuit
Internal
data bus
10-bit A/D
Comparator
+
–
Sample-and-
hold circuit
ADI1 interrupt
signal
Bus interface
AV CC
Vref
AV
SS
Conversion start
trigger from
TPU (units 0, 1)
Note: * The H8S/2454 group does not have these pins.
Successive approximation
register
Multiplexer
[Legend]
ADCR_1: A/D control register_1
ADCSR_1: A/D control/status register_1
ADDRA_1: A/D data register A_1
ADDRB_1: A/D data register B_1
ADDRC_1: A/D data register C_1
ADDRD_0: A/D data register D_1
ADDRE_0: A/D data register E_1
ADDRF_0: A/D data register F_1
ADDRG_0: A/D data register G_1
ADDRH_0: A/D data register H_1
ADDRA_1 ADDRB_1 ADDRC_1 ADDRD_1 ADDRE_1 ADDRF_1 ADDRG_1 ADDRH_1 ADCSR_1 ADCR_1
ADTRG1
AN8*
AN9*
AN10*
AN11*
AN12
AN13
AN14*
AN15*
Figure 18.2 Block Diagram of A/D Converter Unit 1 (AD_1)